I think the inherent problem with the powerscalling community is a bit different than just overjerking or underjerking.
"Who is stronger" is an inherently different question then "who would win".
The former is what people use to ignore how the character behaves, what it would do and how it would act, the environment for the battle, and sometimes even potential interactions between powers from different universes.
What they lose is the heart of the discussion, the main part that's fun; It's no longer about who wins between these two characters you like, because it's not even the same characters as the ones from the source material, just some mindless OC copies with a static list of almost video-game like cpabilities.
This happens because to actually tell how a fight goes, you need to understand a character. You need to read or watch the source material. You need to put yourself in shoes of that character, a place, a situation, and ask yourself what would happen. This takes effort and a little bit of creativity, imagination. So people prefer to compare two static lists of attributes like "strength" or "speed" instead of thinking about it in terms of an actual fight.
In other words, I feel like most fights today are soulless. They're divorced from the enjoyment and excitement of imagining two characters fighting, and one coming out on top. Things like stats, powerscaling and abilities were supposed to be tools to help you imagine who would win, not the end-all-be-all where everything ends.