This is literally the “you have criticisms of society, yet you participate in society” meme but unironically. If you don’t want to participate in a boycott of WotC that’s your prerogative, but “if you boycott anything you have to boycott everything” is an unattainable standard. There is no ethical consumption under capitalism, we all have to pick our battles, and it is not at all surprising that in a community of people who are deeply invested in a hobby, the battle over Creative Commons within that hobby is one many of us would pick.
You don't think, "Let's cancel D&D forever because of a thing they might do!" is a just little stronger than "I am critical of them"? And a little hyperbolic, given the corporate malfeasance that all of us routinely overlook?
This will be an unpopular opinion, but I think we are only in this situation because Hasbro/WotC actually behaved a little
better than most corporations by creating and supporting the OGL for two decades. You think Disney would ever do that? So, yeah, the change sucks. If there is a change, that is. I don't like it. But I find it illogical to suddenly act like Hasbro are incredible supervillains for doing what most of us totally ignore from other corporations every day.
Edit: and if our justification is basically, "yeah, but this affects
my hobby that I am deeply invested in," then that is not a great ethical stance, in my opinion.