I have no problem with loud and, believe me, I've been told all my life "Turn that down!". But there's a massive difference between concert loud and "Alright, this is just ****ing stupid!". And, unfortunately, the frequency of "Alright, this is just ****ing stupid!" steadily increasing. That's sometime's the band's fault, but I've also had someone in the business confirm that many times it's the venue's or promoter's fault.
The drummer I play with works for a major sound reinforcement company and does FOH for A-list acts and artists. When artists he's worked for before are paying the bill they'll request him specifically when he's available because they know they'll get a perfect sound and volume - and that includes acts mentioned in this thread. But when promoters or venues pay the bill he more and more frequently gets told to just turn up the volume and turn up the bass until the sound battering rams your chest but is unintelligible. An extreme example? Last year the promoter of a metal cruise he worked told him to turn every knob up to 10 and leave, otherwise his crew will throw him overboard and then they'll turn every knob up to 10 themselves.
Loud is a hell of a lot of fun. But there IS such a thing as too loud.