@Meddler What was it again about Riot supporting alternative playstyles?

Current PBE changes for Kog'Maw: a honestly pretty big buff to his Bio-Arcane Barrage to help ADC/On-Hit Kog'Maw out, but at the back end of it, a .2AP ratio drop on his Void Ooze, making his entire kit a 50%AP ratio show. Why? Q's AP Ratio was already gutted back in patch 4.4, sacrificing 20%AP ratio for a 20 base damage increase (which wasn't worth the trade as it also became a skillshot at that point, lowering its reliability), ult was definitely nerfed number-wise when the follow-up on the marksman changes came around, sacrificing execution damage for better scaling damage.

A history of Riot not endorsing off-builds:

• AP Trist got hit hard when Explosive Shot became physical damage
• AP Cow got his AP ratios hit when it was strong, as well as it getting the Sheen-nanigans on his W removed (arguably deservedly so)
• AP Yi, AP Sion, AP Taric, AP Skarner: all dead. And no, contrary to Riot's initial belief, the new Yi doesn't work the same as the old Yi if you want to go for the Q resets.

Why is it, that whenever the community finds a better way to play a champion than Riot intended for it, it seems like they initially want to kill that playstyle, when they've said time and time again that innovation is great for the game?