Are you playing on a Chromecast? I have not played on my ps4 pro version as it is just so much better for me.
But I'm a solo player that plays at erratic times. I might have to wait 2 minutes queuing for gambit, but I've saved 20 minutes in load times everywhere else.
I've tried it on both the Chromecast and just Chrome on PC. The former is a better experience overall because, with Destiny 2, you *really* need the aim assist that controller gives you to stand much of a chance in any kind of competitive scenario if you're experience middle-of-the-road latency.
Also, I neglected to point out: players do indeed to get 60 fps on Destiny 2 on Stadia, which is not available with console versions (even the X1X, to my knowledge). That being said, it still feels kind of irrelevent to me because the entire point of 60 FPS is to -- you guessed it -- reduce latency! Frame latency, yes, which translates into a smoother experience, but also input latency as well. The problem? Well, just streaming the game alone is going to re-introduce input latency into the equation; so while visually things appear smoother, the game does not necessarily feel more responsive. For the people who desperately want 60 FPS and want to play a competitive shooter, this is going to feel more like a net 0 gain.
That all being said, if you're playing the cooperative gametypes, I think a lot of these points are less important, and even if you're playing PvP then it's acceptable I suppose since, walled garden and all, you're not being lumped in with people who aren't "sharing" the latency of Stadia. It's even, yes, but I didn't find it particularly fun to lose to what felt like, more often than not, input latency.
I just don't think the average Destiny 2 player is going to want to even think about Stadia. For those reasons, yes, but also because Destiny 2 *needs* a thriving community to persist, and it can't do that on Stadia right now. In fact, I'd argue it has no hope of doing that ever. Destiny 2 has built its playerbase around the ecosystem of PS/XBox, with PC a distant second last I checked. Stadia needs its own, exclusive shared multiplayer game to built mindshare and also to be built around its inherent limitations rather than being a Port of a Port.