Seconding this, I do the same. It's a terrible sign that it took me longer to figure out how to successfully create VLANs and assign them to SSIDs in OpenWRT, which is a fairly simple concept, than it took me to learn basically anything about OPNSense, a vastly more powerful and complex tool.

I appreciate OpenWRT for giving me FOSS firmware I can slap on my AP, and I certainly don't want to come across as entitled to the free labor of the developers, but it's just objectively not very good from a UI/UX perspective.

You've made good points here. Using them as dumb AP points or basic budget routers makes sense. If I want more advanced and user-friendly configuration then I might look elsewhere, but for those use cases, can't go wrong.