Their mutual regard for one another transcends what they want from the relationship, which contrasts humourously with hetero norms of trying to change one other to get what you want
If your jokes made around stereotypes in queer communities are offending people the jokes are probably just veiled insults. You can do things, you just need to be at least a little versed in the community and understand how to make respectful jokes instead of demeaning ones.
The humor for me is that you kind of expect something like this to end in bitter tears and a sad goodbye, but they're both actually totally fine with a divorce and even hype each other up for new relationships.
A lot of trans discovery/coming out stories don't end very happily, so it's nice to see one that does.