Boycotting BG3 over something WoTC decided, I would advise against this. Why punish Larian for something done by a company they have no control over. You would only hurt Larian, not WOTC.
Because the only way you're going to affect a change is to directly impact Hasbro/WotC's bottom line. Atari released NWN 2 with a DRM scheme that was so aggressive that it was blocking things that weren't even connected to NWN 2. In my case, the DRM blocked me from burning CDs, even though the music I was burning wasn't connected to Atari at all. So I, and a whole lot of other people, quit buying things for NWN 2. Atari wound up patching the DRM out. It wasn't altruistic, it was "well, this is costing us more money than we want to lose", so they fixed it. It had to suck for Obsidian, but it got the message across.