I believe there was similar complaints over SBMM in CoD Cold War. I'm mildly sympathetic to the view as playing players of different skill levels can be fun in some some situations, like learning tricks from better players or having a underdog comeback against a better team. Not quite the same highs or lows, if that makes sense. Some implementations seem more like they wind up targeting a 50/50 win rate, resulting in games that seem like the system expects them to be a loss. Overwatch felt closer to this for me.

Overall I think the best solution is probably the old fashioned dedicated server, where people can find a group with a roughly similar playstyle and skill level, but still enough variety to not be overly same-ey per game. I have fond memories of going up against and cursing better server regulars, and then having it flipped around when on their team.