Maybe I'm misinterpreting, but this comment is actually pretty disgusting, part of this new type of thinly-vailed socially acceptable racism that is justified on the basis of being on the "right side of history".
The real reason is because they want equity - equal outcome for all. That means penalizing the overachievers and redistributing the outcomes they deserve to the underachievers.
Race and other grievances are just excuses.
I think you should assume most people act in good faith and are just trying to be nice to people they care about, but because human systems are, like humans themselves, complex and flawed, this can create more harm than good.
There has, as far as I can tell never been a "them". Furthermore, assuming such a "them" exists tends to lead to all sorts of bad behavior.
It's likely that individuals that support the social justice cause have good intentions, however, the cause itself as a system is leading to paradoxical outcomes that are different and sometimes the opposite of what it pretends to promote.