Concern from a Catechumen
I started OCIA at a local parish a few months ago, and I've spent a few hundred hours researching catholic theology since then. One thing I keep noticing is people saying something like, "The church held X doctrine (or tradition) for 90% of church history, until Vatican II changed it." Are these types of things as prevalent as social media makes it out to be and, if so, how should I reconcile that? This has been the hardest thing for me to deal with since I started this process.