I understand your opinion, and I do agree it's the family's responsibility to hold people accountable. However, there is a time and a place for everything.

I firmly disagree that family bonding time during holiday is the time for it. And that feeling is mostly shared throughout my immediate family.

I personally wouldn't attend family gatherings that were containing political talks, to be honest, It spits in the face of the entire point of family bonding time to try to be pushing a political sway and goes against the entire point of meeting for holiday which is family time bonding and having fun.

those type of subjects generally cause more tension or isolation than bonding. So are better off as a more one-on-one than an entire family thing. A one-on-one also allows it to feel more organic. Someone is going to be way less receptive to any reasoning if they're being put on the spot during a family dinner than if you were to just approach them during casual free time. Results caused by peer pressure rarely work out in the long run, in order to discuss opposing views, you need to keep the person you're talking to open for discussion.

Personally, I feel isolating out the family members who can't separate their political identity from their person is more than adequate for keeping family time as a bonding time instead of an infomercial/trying to pursuade people on differing opinions while getting the point across quite nicley.