Freespins, bonus, and major promotions are the only reason I can try a new casino.
If you look on perspective, the majority of casino have the same providers, same games etc etc... only site capable to innovate or provide new product are able to receive attention from established players.
Of course I don't play for hitting a big win but just to relax and have a bit of fun...
Most gamblers have probably done that too. That's great to try and usually it's not a big deal for them. About the number of new casinos available on the forums should probably be judged as a good development for the industry, obviously not all of them will be successful but it might last longer if they have good service to their customers. I'm willing to do a trial if needed, but of course I'd avoid KYC as much as possible especially if it's just to try out the service.