No, it is 100% being framed as "You can build your app once and deploy it everywhere" with everywhere including web. It's sorta maddening, IMO. There are certain types of apps I could see using Flutter for (basically, ones that would lean heavily on canvas anyways, games, drawing, etc.)
It's hard to quantify exactly what "everywhere" means, but for the vast majority of end-user devices, you'll have a more efficient Flutter build target than web.
You're probably right in that they are pushing the "first class web target" narrative a bit far, though.
Just to be clear, I used the word everywhere. I believe they are quite a bit more explicit in framing it for all platforms, including web specifically. It's possible we'll see it get there, but I think there is a lot of things to do (and undo) to do that.
