Most of the cc in the game is immune to tenacity these days.
Bruisers have less movespeed advantage in base form than in the past... favoring ranged champs more than in the past from level 1 on. And once adc's get crit... they literally can't be touched except via flash, ghost, active itemization, or a long cd gapcloser as in approx 8 sec or so barring essence reaver interaction to reduce the cd on said ability.
Adc's get 900+ damage aa's they can use from half a mile away or they have 2 sec cd dash like vayne along with more active items plus combat sums to let them kite or chase opponents as they please than any bruiser can reasonably throw into their kit. Again... further exacerbated by crit giving them higher in-combat movespeed.
Combo that with the fact adc's kill bruisers in about 6-7 aa's and bruisers ain't got time to focus down enemy frontline first... they gotta try to remove the adc from the game immediately or they'll just die w/o being able to make much use of their kit. Well if your gapcloser is on 8 sec cd and you need to use it to get on adc in first place so you can damage them before they kill you from half mile away with point n click or before they perma-dash aa, dash aa kite and kill you and you die to 6-7 aa's... you die in less time than it takes for your gapcloser to be back up. Which means either you're 1-shotting the adc or you are dead... 0 counterplay. Mid game is bruiser favored. Late game is adc favored. Most games end around mid or mid/late game so it seems like bruiser is just op. That plus crap like jax actually is op so it gives bruisers and fighters a bad rap that most don't deserve. So back to the point of this paragraph... due to problems mentioned above... bruisers (thanks to insane per-aa damage adc's have gotten and the uselessness of true defensive items) have been put in a situation where they HAVE TO build to 1-shot the adc. To do anything else is to pick an inferior version of a tank and basically be trolling... about as good as playing vayne in a lethality only adc meta where jhin and varus are the only real viable adc's.
You also fail to analyze anything adc's have in their favor while making false claims like higher movespeed for bruiser... which only applies until adc gets items.
Then there's all the %hp damage of adc's. And the ones that don't have it get their 900 dmg aa's from half a mile away while having higher movespeed than the melee trying to catch them plus extra combat summoner in
. And it doesn't stop there. There is also
to multiply damage for on-hit adc's like vayne and bork users. And the bonus damage they do to anyone with higher hp than them... which is pretty much everyone.
So your "bs tanky" bruisers are now taking closer to say... 1100 damage from a single aa (before resistances... which they basically can't bother building due to needing to 1-shot you and resistances being largely trash currently - 1 reason why sion and urgot are the only "tanks" being played top). Gee... imagine if bruisers got bonus damage multipliers on their aa's and abilities for every 0.1 attack speed advantage their opponent had over them... then adc's would complain about how unfair that is.
See how freaking stupid and absurd that sounds? Yeah? I thought so. You are using that exact same logic as I use there (bruisers doing bonus damage based on opponent's attack speed advantage) when you complain about bruisers being too good while ignoring the bonus damage adc's get to anyone with higher hp than them (which further multiplies their already crazy-high dps from aa's and on-hit). I.E. adc's have so much shit going for them. If they want to greed and go full glass cannon, then they need to shut the hell up and stop whining when they die like they're full glass cannon.
I don't see adc's going and crying when a zed steps on cait trap and then loses to her in teamfight despite getting off his full combo after cc ends... before dying to one more aa from adc after his ult ends and cait lands her 5th aa on him. Adc's go... zed deserved to die there cuz he's squishy and he got cc'd for half a sec. Oh... really, so that's fair for zed to get killed 0 counterplay or from getting lulu polymorphed for half a sec when jumping adc from fog of war during teamfight even though he played shit as best as possibly minus eating a polymorph. But somehow when same thing happens to adc for being squishy and they get jumped on and cc'd for half a sec... shit's broken and adc needs buffs. Yeah... makes perfect sense lol. The hypocrisy and arrogance of adc's is beyond the ability of reasonable human beings to fathom.[zombie-brand-facepalm]