TL;DR consensus is mostly karma is the source of quite a number of problems on Reddit and many people are comfortable with not having them back. There are positives, but the system has to be reworked for it to really work to any capacity that doesn't negatively affect the platform.
Personally, I don't look at karma. I barely even checked other people's user page and I only went on my own page to look for my previous comments.
The people in that subreddit seem pretty cringe and whiny. Some of them will quietly eat their word in the not so distant future when Lemmy and Kbin has more useful features than Reddit as Reddit keeps going down hill.
Imo, more emphasis should have been made on how spez treated Christian, the Apolla dev. It's honestly disgusting. And not even any kind of apology or direct reply. Spez just went on to smear Christian's name more with disinformation he fed to the press via interviews.