>>I wonder where you see this… all I see about native vs web apps is about mobile devices

Yes, that's where I'm seeing it.

>>Bootstrap piles up years of development by very large companies and communities, very far beyond 'whatever'…

"Or whatever" wasn't intended to denigrate Bootstrap but to head off any instruction that there are other options. Certainly when I mention bootstrap to bright young things, invariably one of them opines "oh don't use bootstrap, use " ... and sings the praises of some amazing new Rube Goldberg option that derails the point we're discussing. Probably less of a risk here, but it' a habit now.

>>revolutions are made by passionate young people… like we were 30 years ago

Perhaps I needed to say revolution or whatever.... ;-)

>>we've built an algorithm that reads the layout of forms, assigns controls into rows and columns and maps all this into the Bootstrap grid and grouping system. I would not claim to call that 'AI', however it makes some optimisation decisions. The value of this algorithm strongly depends on Bootstrap design.

Got it- and I can understand how the number "12" would feature prominently in your optimization which would not necessarily translate well to other options. But you've chosen sensibly IMHO: we picked Bootstrap ourselves fwiw and already had a template model for hundreds of web pages that was easy enough to adapt or I'd have been looking hard at FiC. We also had a PHP version at one point, not sure what happened to it but it used some other framework that actually looked pretty good and was highly rated by Linuxheads.