Anyone else dislikes 15-20 min ardent kog'maws?

Like legit straight up so many times I see this gatling gun pop up with double/triple kills twice-thrice in like every kog game, doing even hybrid dmg that can kill you in 3-4 autos with just the long range barrage before the 15-20 mark a lot who constantly roams and melting objectives and jg like butter with heals and shields out the wazoo... Late game champ btw. How can we counter this if he gets ahead in this snowball early 20 min burst meta when we're all 2 behind in gold,lvls, and feeling hopeless if we are still unable to kill him without a single person/2 dying for him. I mean I was told by a mastery lvl 7 azir that he has to hug turrets till lvl 12 before proceeding to shurima slam bam, that's 20ish mins right there of passively farming, if that's suppose to how late game's envision then why am I seeing these so called "lategame champs" destroy everyone with 2 items in less than 20 mins. Also why would they give an aoe old poppy invulnerability like ult where instead of being dmg only by a single champ, it's not being dmg by whatever's champ not in the circle trying to hurt you.