Quora also started out as an awesome service just like Medium. Eventually though, the VC's need the promises they've heard during fundraising to be fulfilled. That's when the platforms start with the dark patterns. Non-VC companies are a longer and less glamorous slog to get off the ground but also don't come under pressure to compromise on their morals.
Can you describe what Quora did? I've heard a few reports that it's not like it used to be, but I've found it useful, and am curious as to what makes it worse than before.
It's basically a crapshoot as to whether the person is a blowhard or knows what they're talking about.