I don't exactly understand the hate that Telltale Games gets for its technical issues. They're noticeable and inconvenient, especially in games that rely heavily on quick-time events, but unless you're playing on last-gen systems I don't see how technical issues could absolutely ruin your experience.
Personally, I thought Batman was good; in some ways, really good. The combat was far more engaging than anything they've done before and I think the investigations were really well handled... if not underused. The plot wasn't perfect but it was far better than Game of Thrones, which suffered from the heavy weight of canon on its back. Batman took a fresh take on the usual villains and themes and even if I wasn't a fan of how they handled his parents' murder, I think the game benefited from those twists.
I still think they could do better. They could do a lot better, both with graphics and gameplay. Games like Until Dawn and Life is Strange best anything that TTG has done in that regard. But to suggest that their games are hot garbage is a massive hyperbole.