It's nice to see a Yukari-focused dojin that doesn't focus on her obsession with Miho.
I agree. I especially liked the flashback to her childhood that shows why she didn't have any friends before meeting Anglerfish Team. While those girls weren't exactly nice, it's understandable that some people would find her preoccupation with tanks off-putting.
I actually find that a little strange within the social fiction of their universe. Tank operation is treated as a sport and a feminine activity in their universe, so it seems more like it would be like a man in the modern USA who’s REALLY into football; owns memorabilia, knows all the stats of every team back to like the 60s. Sure, everyone around him is like “Carl is REALLY into football” but Carl isn’t ostracized, really.
Unless tanks are a “feminine” hobby in the sense that like, BL is a feminine hobby; but we don’t really see, say, Miho getting the same treatment and she’s pretty “into” tanks too.