Frankly speaking, I don't get why Domestic no Kanojo is getting bashed, it has a decent story which is ecchi at times, has good plot progression, and there's nothing like School days or even Kuzu no Honkai TBH.
The anime is definitely watchable.
It's just that our MC is a bit fluent f()kall , obviously, if you got the chance to kiss and sleep around, nobody would decline.
Surely, people expect this to be a good romance anime but instead, it's a complicated melodrama with characters that are indulged in something messy.
It's an average watch.
You can enjoy it as a one-off, the ending gives you satisfaction.
Although more people will find themselves falling for the 2nd FMC which is why they might hate this anime but to me, it doesn't matter.