SkyTurnsRed
Banned
I think it's more a failure of communication than insincerity. It's definitely possible to spend a very long period of time with something and become so frustrated and angry at it that it feels like you hate it. The problem is when people say this they don't seem aware that despite the things that bother them, or perhaps because of them, something about the game hooked them and that implies a measure of success, even if they end up sour about the whole thing.
Another example of something like this is a long-running TV show. You start out watching it, you get invested in the characters and stories, it goes to shit, suddenly you don't like it much but you're still watching in a sunk cost fallacy hope that your initial investment in the characters and stories will be rewarded, it isn't, you keep watching, and in the end you have a show you've spent a ton of time on but despise.
The trick is being introspective enough to identify why you invested to begin with. That's helpful anyway, because it leads to a better critique of how the thing went astray.
I've been having the same issue that the OP has, trying to figure out how people can invest so much time into something and still hate it. This made it click for me. Thanks.