I think you're right, although I'd say bad theology is in the eye of the beholder (unless we're talking about prosperity gospel theology, which is objectively terrible)

I grew up a rather serious Lutheran, then branched out within Protestantism in college. John Piper, Francis Schaeffer, Tim Keller. Tons of Bible studies and podcasts. I found it to be rather intellectually satisfying.

This is all to say that I don't think bad theology was the issue here. My only issue was that I made too many friends who were missionaries (some with Wycliffe) and, inspired by how they were living life, I flew too close to the sun, as it were.