Definitely not true, and a generalization. I've worked at the shittiest of shitty culture game startups in the early 2010s to places that really strive to build a great culture for everyone at work, is empathetic, and cares about putting employees on a career track they care about.
Just because you haven't been at such a place doesn't mean it doesn't exist. Just because you had a bad experience doesn't mean that speaks for everyone.
At this point you can definitely work for interesting startups remotely, I've personally consulted for several in the past year on the side. They use interesting tech, have great people, and are working on interesting problems.