Too serious in the gym?

I visited a gym recently and the coach was super uptight. It felt like the class was being treated like a bunch of 4th graders and no one seemed to have a cool relationship with each other. The coach insisted being called Kru otherwise he'd get pissed lol. Dont get me wrong the training was great and the guys definitely know what they are doing but at this point in my life im just doing this like a hobby and have a family. I dont have time to be talked to like a child from someone who isnt that much older than me lol

the other gyms i ended up going to was more of my style. the training was serious but the coaches didnt mind chopping it up with you. anyone ever have this experience?