Thought I'd check back in on this thread today!
So I'm not excomm. I left willingly. I grew up in Provo but me and my immediate family were never believers. We had a ton of close extended family who went to BYU though so we were around the team and culture a lot, and to this day I work with several former BYU players. Since we were never believers, nor regular attendees, I was able to basically consider BYU to be just my local team. If I grew up in SLC or Boulder or whatever then it probably would have ended up being whoever was most local.
We still have very close, very dear family members who are active in the church so in some ways I still have a soft spot for the culture even when I staunchly disagree with the religion itself. My best friend is still an active member so I keep my thoughts to myself in that arena when I'm with him. I always felt that Gary's speech in South Park mirrors a lot of my own thoughts on the religion, even if Gary is a believer and I'm not.
The LDS Church is changing though. Slowly but surely. It is often times ~20 or 30 years behind the rest of the country. But the younger generations (millenial/GenZ) are beginning to make a noticeable difference in the area what with accepting LGBTQ+ individuals in the community, and such (I've actually seen the Pride Flag displayed on several active members homes). There is a ways to go, but it is improving.
That being said, I can't come to believe any of it. I'm a live and let live kind of guy. If it isn't harming or demeaning anybody else then do what feels good and right.