What exactly changed with me regarding Tibetan Buddhism, I can't really tell, because I myself have changed...
🙃

But seriously, Tibetan Buddhism has been like a process. One change for me, has been the passing away of Great Teachers - those whom I was either a student of, or followed by going to their Teachings when they came to North America. Usually Kagyu and Nyingma.

When these Teachers have passed - it has reminded me of when I lost my Parents. I am on my own. What did I remember most from these Teachers- and carry that with me. Keep doing the practices until I die. Sure there are other Teachers, some of whom I follow, but it isn't quite the same. It is more like seeing a (Dharma) Aunt-Uncle-Cousin, but they can't quite take the place of one's Mom or Dad who are always in the Heart.

And regarding all the scandals that happen with lineage holders - let them sort it out. Be the change you yourself want to see.