In my opinion they are a great publisher, but a mediocre developer. They did make some great games, but they were so full of bugs and glitches, that they eventually became unplayable, and all of this culminated in Fallout 76.
Honestly, people were way more forgiving to Bethesda games, when it came to bugs and glitches and used a number of excuses, and fans of those games made patches that fixed things, that Bethesda should have fixed themselves.
Just look at Fallout 76, half of the code was from Fallout 4, no NPCs, the final boss fight was recycled from Skyrim (the one with the dragon), and not to mention the store, microtransactions and subscription.
They got lazy, because people cut them some slack, and were way less critical when it came to their games. I will just say that they have an amazing art team, and anyone who saw their artbooks, can't deny this.
Their only hope is that the new Elder Scrolls game and Starfield, be such an amazing games, with minimal bugs and glitches, and maybe people will forgive them for their previous mistakes.