You know, I don't think I've ever played a game made by Bethesda. For me, this news has been kind of a big shrug. It doesn't change my consideration of whether I'd get an Xbox console now or in the future. Even though Bethesda was a 3rd party, I always associated them more closely with Microsoft and Xbox. I guess Skyrim and the 360's promotion of it just tied them together in my mind. So, the move makes sense to me in that their software always seemed to be more in line with the type of gamer Microsoft would seem to advertise or appeal to.
I do appreciate how Bethesda helped changed the 3rd party conversation and situation with Nintendo and the Switch. When Switch was first shown with Skyrim, it was just taken as a situation like EA and Mass Effect 3 at the Wii U launch of a third party doing a quick port of an older game to offer some token of support with a popular game but I don't think anyone had high hopes that Bethesda would be bringing over more of their games to Switch. And, indeed, in the early months of the Switch, there were third parties throwing out various excuses for why they weren't including Switch in their plans despite its big sales. It seemed like this could be another Wii situation of being a market leader but 3rd parties keeping their big titles away from the system. But then Bethesda announced they were bringing over more of their big games like Doom and Wolfenstein and that seemed to spark a change with most third parties taking the Switch more seriously and as something worth supporting. Even with a lot of being their older games and stuff in their back catalogue, it has still helped make a difference in people's perception of the Switch. Hopefully this will keep things going in the future with third parties not outright dismissing Nintendo's hardware like they have been for almost two decades now. For that, I have a positive view of Bethesda just for being a smart third party by recognizing that it made sense to offer their wares to all segments of the market rather than ignoring a portion of it that was steadily growing. It helped signal that the Switch was going to be different from the Wii.