I enjoyed the show as well. I don't think the dislike is necessarily coming from those approaching it as a sports anime fan though, it's more of an issue of people not being able to get past that it's about a bunch of young people acting like dumb young people.
That's not the issue I have with the show, the first bunch of episodes were fine, I enjoyed Takumi character because he was a different take from the usual shounen MC/LN MC, but the show ultimately failed to do anything with his character and Gou. This episode they had what, 10 lines? Seiha went nowhere, the coach character went nowhere, the grandpa went nowhere, Takumi's mom went nowhere, Gou's mom went nowhere. It's a characters focused story where half of the cast faded into nothing. Yes, Takumi and Gou's moms weren't meant to be important characters, but there were certain dynamics that the show was clearly trying to explore that simply... faded into nothing?
The new dudes hijacked the plot, that's fine, they brought a different dynamic, but even their drama wasn't particular well told and lacked of any resolution. The scenes flow was bad, there has been like, what, two time-skips and it barely felt like minutes passed or the characters changed.
Yes, there is certainly a group of people that couldn't get past the characters were flawed in real ways instead of stupid anime flaws (KEYaids stuff is way worse, drama-wise, but people get past it because the characters are cute or give them a boner), but there are also people that have legitimate problems with the development (or lack of thereof) of Battery characters. I wanted to like Battery, but the show just failed me in every possible way.
Seriously.
