They don't really have a reputation of that, except on forums like hn, which is not indicative of the broader market. Even among gamers, this reputation of Google doesn't exist.
To be fair, most gamers I’ve talked to don’t even know what Stadia IS.
By definition, gamers play games. To do that, they almost always own a console or gaming pc to do so. As a result, they have no need for Stadia in the first place.
You have casual gamers, that are perfectly happy playing natively on their phones or laptops at low settings.
Then you have “serious” gamers, that tend to be happy spending hundreds of dollars to make sure they have up to date hardware to get the most of their games (and thus, likely won’t be happy with the latency or game selection of Stadia).
Somewhere in between is a market of people that say “gee, I really want to play Destiny, at full graphics, and I’m ok with a little latency, but I can’t or don’t want to buy a better PC or $500 box for it”.
I’m sure that market exists, but it’s gotta be rather small in the best of circumstances, right?