It's not his ranting that bothers me, it's his explotation of the fighters. Some of these guys should be able to retire by now, like boxers are able to do.
You should make sure you can do everything you want to do there. In other words, the gym needs to have all of the equipment you like and it needs to offer good 'operating space' during the hours you wish to work out. A lot of people make the mistake of showing up to 'tpur' a club during a time...