You're comparing two completely different types of games and treating them the same, which is not going to work in practice.
Hearthstone is a perfect example of mainstream accessibility. You want to play that with sighted people? Go right ahead.
There is equally no reason why we can't have accessible Spades, Hearts, Chess, Dominos, every single game that is on the Playroom can be accessible on a mainstream site and we could be playing with thousands of players instead of limiting ourselves to a group of close friends / finding random people amongst 200 online users. However, do you know why the Playroom even started in the firstplace? The developer described it perfectly in a blog post once in French. He wanted to play all these board games with his friends, there was no accessible place to do so, and he started his own. 11 years later, there is still no accessible place, other than a few exceptions like Chess.
Perhaps you're surrounded by people who don't enjoy card / board games, Playroom has graphics for Chess, Connect 4, Reversi, Battleship, Backgammon. Overly simplistic, absolutely, but working, and certainly better than nothing, with all other games of course as you describe in a text interface. In fact, if I was sighted, unless I had a blind relative / friend, I'd have no reason to go on QC. That's nothing strange or unexpected. Why do you even expect that people should know about audiogames / what makes it weird when they don't?
But then we go to the second type of games. Fortnight, League of legends, World of warcraft, you can't reasonably keep up and enjoy playing with your sighted friends with a limited mod that gives you only so much.
Ok, so they'll laugh at you for playing Crazy party that they never heard about, but they won't laugh at you for bashing your head against a wall and taking 2 minutes to aim at someone?
That's showing to them that you're a capable blind person playing a game? I really don't think so, that's just embarrasing. Look at this poor blind person, they have no games to play but they're trying. Claps.
Maybe your friends will even be willing to slow down for you so you can keep up, that's great, but after a few weeks they'll feel like they're back on QC and will get bored.
I very much believe that we will reach a stage at one point where we will have action games that are actually playable with sighted people, but we aren't nearly there just yet.
I have absolutely no issue with you playing whatever you want and whatever you enjoy with your friends though, but for god's sake, stop feeling like you're above everyone else and we're all doing wrong but you people who make all these mods that cover 15 percent of the game are actually right, and if it wasn't for us preventing you, so much progress would have been made by now.
Don't forget that the only reason an audiogame is made is because a mainstream equivalent does not exist. It's easy to say Hearthstone now, but Crazy party was translated to English in 2016, and back then, Hearthstone was just a dream. Not to mention that I didn't even leave it because of HS and I doubt many people did, I left it because I can't play the same game for 5 years for the same amount of time, and because, as expected, its development is considerably slower than it was a few years ago so there isn't as much new content to mess around with.