All the things you listed are irrelevant for a touring musician. All they care about is that equipment is used that sounds good. If it's a pain to set up or manage, that's the roadie and live mix engineer's job. Not saying some behringer gear doesn't sound good, just that bands can be very specific about their sound and a blanket "no behringer" rules out a lot of cheaper bad sounding gear in 2 words.

There's also the idealogical standpoint. That Behringher rips off other designs and mass produces them cheaper off shore. I'm in 2 minds about that. I now have a 2600, which would have been impossibly expensive (even with a TTSH) for me.