Why Do Strategy-Based Champions Seem to be Getting The Short End of the Stick?

I actually asked this same question in a ticket, a little while ago, and the response I got was something along the lines of; That's not a pattern, it's not like that because we're taking a bigger view of all the champions together. When I pressed for more details, I was told "It seems like you are looking for things outside yourself to blame for not being able to climb in ranked". Needless to say that as I do in fact see a pattern here, I've moved on from that ticket to the boards to get a second opinion, who knows? maybe I'm crazy, but it seems to me that more and more of those champions like Zed or another good example, the new Irelia, who are "harder" to play are constantly being set up to just flat-out be stronger than more strategy-emphasizing champions like Heimerdinger. I'll be using The Donger's old passive as an example here, his turrets are pretty easy to kill, especially in the current high-damage state of the Fields of Justice, but they were back then too, and they ripped the hp regen out of his passive because it let him repair towers too. Back then towers were stronger, true, but he hasn't gotten it back now that they're more vulnerable, has he? Meanwhile other champions more based around quick, precise keyboard inputs seem to be trending up, thanks to things like Irelia's rework, the complete rework of mana regen items, and the deletion of spell vamp from every item that used to have it outside of hextech gunblade, and even that only works because it's healing you for 15% of ALL damage you do.

There are a number of other examples I could add here of strong, key-spam based champions, Riven, and Ryze (Who originally suffered with all the other mages only to go back to being a walking spell-gattler when manaflow band was changed to it's current effect) to name a few. I'm not angry about these changes, harder to play deserves bigger payout, but once you master a champion "harder to play" becomes a pretty relative term, and strategy-focused champions seem to have a much larger number of entries in the "underpowered to all but true master players" category, while others that continue to shine outside their ideal strategic scenarios usually end up doing so by deviating from the more tactical aspects of their kit, like that adorable little fuzzball Teemo (whose shrooms are a great tool), with on-hit effects and attack speed as opposed to ability power and tactical placement of his chemical minefields). Strategic champions require skill to play too, so why aren't they getting much love?