I have a hard time passing judgment here, but I think I have to say YTA for the way you’ve decided to handle it. I think it would have been acceptable to just say “I won’t be able to attend in person” and keep it vague rather than draw a hard line on social media (which is already the worst) over a very hot topic when your family is already grieving. Cooler heads will not prevail in this scenario.
I completely agree with you that watching my 14th amendment rights get stripped away in real time is horrifying. It’s truly devastating. But I think you’ve handled this poorly. I wish you the best of luck and I’m very sorry for your loss.