If that's what I were worried about then I think I'd just leave it at, "we didn't feel like our personalities meshed well" or "we don't think you are a culture fit" and leave it at that.
They could also be signs of a defensive response on the part of the interviewee, who may be nervous. It is also a typical response of any person trying to maintain their sense of personal space.
That's because you have a provisional rating for the first few games (it should show up as 1553? or 1250?). Your rating will swing for the first 15-20 games, at which point you'll see the 8-20 fluctuation.
It's likely that you've played quite a few games on Chess.com already.
I have played a lot on Chess.com. Perhaps they did the same thing and I forgot - not sure. Nevertheless, I'm calling it because I found it offputting when I tried to switch to Lichess.
Day-to-day, how do founders in similar positions coming from cultures with tight-knit families address this? Especially as parents age?