I've kept on top of the current state of XForms for years now because they are the pinnacle of "DRY" for "CRUD" however they aren't ubiquitous due to the ecosystem around them having significant tradeoffs if you aren't already invested in certain technologies. Every now and then XForms looks like it will fit, but then it fails at a later design review. This is mainly due to a lack of options when it comes to the backends to process them. Like many XML family technologies its a deeply corporate world with a lot of lock in.