I bought the original Axe-fx when it came out. The idea was to not buy anything else and all these years later I haven't bought any extra pedals. I bought the old Yamaha MFC10 midi foot controller to operate it in a simplistic fashion.
The Axe-fx is the best I've used. The ultra, II and II XL are a massive step up. Most of the old criticism was by people who never played it and were never going to pay the high price for it anyway. Tedious.
Try it, buy it, like it or not.
Does the bedroom player need it and is it X amount better than the ones aimed at the hobbyist? Well, you can still get great sounds out of any of them but this is a step up. I'd be happy to use a cheaper one (I have done) but I'm glad I have it.
Although it shouldn't matter if johnny famous player uses it, there was definitely a shift when x,y and z started using it, mainly for the effects, which are fantastic.
I'd buy the new version in a heartbeat if anyone could lend me a few grand.