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.
While tankery is a feminine activity, it's also apparently not as popular as it used to be. In Little Army, Miho, who didn't have many interests outside of tankery growing up, had trouble making friends until she met Hitomi, Chihiro and Emi near the end of elementary school, so she did have some of the same problems.
I suppose Yukari's problem is twofold; 1)Her only real interest is one that not many of her peers share, and 2)she pursues that interest so fervently that some people find it weird. The first point is the main reason but the second one also plays a role to some extent.