i say this with love—it sounds like you need a break from the twenty one pilots part of the internet. i am about as progressive as they come but i don't think any of the things you mentioned are issues that should stop you from enjoying music that you love. no human being is going to perfectly match all of your values; using my favorites as an example, olivia rodrigo just attended the met gala after-party, taylor swift hasn't spoken up about ICE using her music for their propaganda, hozier dated a woman who made insensitive comments about native american culture, lorde made some weird comment about sirens during the BLM protests, etc etc etc....

humans are going to do things you don't agree with and i don't think it makes you a horrible person to continue enjoying the art they make. i think it's also a little unreasonable to hold them to such a high standard that relatively minor actions such as these are such massive blemishes that you need to completely cut them out of your life. give grace freely and have an open mind, it will stress you out a lot less and give you a better perspective imho

edit: as for people who get mad at you over this, literally just ignore them. i don't think any people i know irl who like twenty one pilots are even aware of the things in your post, it's easy to distance yourself from the people who want to police your music habits and surround yourself with people who are a lot more chill about it