One might choose multiboard if they want better weight bearing characteristics. I went through this whole evaluation a few months ago and that’s how I ended up with Multiboard over the alternatives.
I think the license is a negative but I also don’t think it’s going to impact end users in any way that would make me worry about using it.
It’s not like I’m dedicating myself to a software ecosystem or something complex like that. If the license somehow becomes a problem, at the end of the day it’s just a pegboard that I printed for under $20 worth of material. I can just make a new one.