Nope, not crazy.

I don't have to lock relays with Biblestr, as I'll be filtering based upon labels (manual curation), and the sorts of clients we build will only have a default, not a lockin, but I could imagine someone doing that.

I think it's a weaker business model and won't last for anything other than niche products or highly private groups, tho. Even private groups would be better with encryption instead of lockin.

Lockins drive users up the wall and would encourage forking.