Not gonna spoiler my response, shouldn't spoil anything. I am glad that was addressed. We knew about it, but never actually knew what kind of solution they came up with. Now we do.
It's another reason why Vulcans might just be less comfortable on non-Vulcan crewed ships.
There's really nothing wrong with that. It's not some weird racial segregation thing, it's just practical. Different aliens have different needs. Some are more ok with making the accommodations necessary and dealing with the discomfort of working with a mixed crew, some aren't.
I could see Ferengi having trouble with a mixed crew. Everyone/thing is so damn loud! Although they do seem to be able to handle it fairly well.
Sometimes it might just be straight cultural. Tellarites could be problematic, because... they're assholes. Like, that's their culture. That could become a real issue on a mixed crew. Toss a few just absolute dickheads in the mix, with the inability to "correct" their behavior because there's nothing to correct...
I was in another group somewhere and someone said something that made me have something of an epiphany, mildly related to the last bit there. Someone said something along the lines of "I hope the crew encourages Spock to become more human." That made me think... that's... actually really racist, and something that we have seen several Vulcans just have to endure. Tuvok is consistently harassed... if we step back to get a different perspective, it's like having one black person in a big group of white people, and white people are just like "Hey, stop being so black!" That's kinda messed up.
On a lighter note, I can't help but find the humor in a Tellarite on a mostly human ship. People lodging complaints, and the response just kind of being
"What are we supposed to do? He's Tellarite. We can't tell him to stop being so Tellarite."
"He insulted my grandmother!"
"That's a common Tellarite cultural practice."
"He literally called me fat."
"Tellarites are known for their honesty, they would be doing you and themselves a disservice by not voice their opinion."
"He called me a pig! I fired back saying that's really ironic for a Tellarite, and then he got angry!"
"Well, don't you think you were being a bit culturally insensitive?"