To be honest, i disagree. My reason is:
1. Like DontTalkDT said, ever increasing multiverse AP will just be too dependent on the moment of the cosmology itself
2. Timeframe, ad-infinitum multiverse increase over time, but we don't even know how much the universe can grow under a specific time period, that mean it will be hard to determine the AP, for example at one moment we have 1000 universes, after 1 day the amount of universes could be 2000 or 3000 or whatever, the timeframe and the increasing rate is mostly unknown, just make the debate being harder.
3. AP and Cosmology Size, the cosmology increasing, but that doesn't mean the AP also always increasing along with the cosmology. For example, character A can burst 1000 universe, over a time cosmology increased to 10000 universes, but nothing imply that A over the same time can increase his AP (or some special case: hax) to 10000 universes. So what the problem, it is the corresponse between Character AP and their verse Cosmology Size, as we known Ad-infinitum cosmology always increases their size, so in order to fit into the High 2-B tier as we called it, character need to be implied to have their AP constantly increasing to match their comoslogy ever increasing size. So if not implied the cosmology could just increasing infinitely but the guy AP just stay the same, or increasing but not by much and can't catch up with their verse cosmology size, so why the verse in High 2-B in natural, the verse's character is still at 2-B, some verse could fit, like i think people said about Rimuru as his power constantly increasing, or DBH characters with their massive amount of stats amp, damage boost, tranformation, reactive power level and accelerate development,.....
This is my opinion, what about you guys =.=
Edit: Shit, forgive me, i comment on Staff Only Thread =.=