This is fun. Hopefully the Steam release doesn't mean abandoning this version though?
The most central problem for me personally is that the Steam client has been a literal health hazard since 2019. If I buy a game there, I don't get access to the game. The over $3000 worth of games I bought there before 2019 have been effectively stolen from me by Valve because of the problem, and their refusal (not failure) to fix it.
They've directly acknowledged that they're not just aware of the problem, but were made aware of it within a few days of the update which caused it. Their response started out with a direct promise not to bother taking appropriate steps to fix it, and has only escalate to more abusive behaviour since. That includes violating privacy rights of affected (former) customers, trying to gaslight people, and in at least 2 instances I'm aware of, trying to coerce people into self-harm.
There's a bunch of reasons other people dislike them as well, with a number of features which had been beneficial to power users being removed in the past few years for dumb reasons, but the "they've functionally stolen $3000 worth of games from me" thing is a slightly higher priority on my personal assessment of things.
I'm gonna go ahead and call bullshit on some of your claims here. A multiconglomerate with as many national and independent eyes on it, at the MASSIVE size that Valve operates at I can't see having any interpersonal communications with ANY customer "trying to coerce people into self-harm". And to levy such an egregious claim without any definite proof, or even references is startling. Given substantial evidence, that would be a whistleblower level debacle. International news, at least amongst the gaming community. Keep your grievances personal.
As one of the 2 people I can say for sure it happened to, I have good reason to be confident in what I'm saying. I also have good reason to not just post the records publicly, though. I've got sufficient evidence to support everything I'm saying, and have provided it to relevant authorities. Sharing the kind of personal information in a public space is... less appealing to me.
As for your claim that I should keep my grievances personal, well...
I've literally had one of the *VERY* few people who seemed remotely competent in Steam support tell me to "make my voice heard", and I've posted every one of these claims in spaces where they're clearly visible to Valve, directed at them publicly, and *WOULD* be grounds for a defamation claim if they had any basis to make one. The fact that it's true is part of the reason they're being investigated for their conduct, and I'm not being taken to court over my own *FACTUAL* claims. Because telling the truth is an absolute defense against defamation.
You and I are both well aware there are methods for sharing such correspondence without DOXXING anyone. In my opinion, the harm potentially being done is EGREGIOUSLY worth the risks with a little censoring of personal information. And I'll repeat myself, and I say this with no malice: without evidence, your claims are paper thin. By all means, make your voice heard, but if you're telling the truth, do so with your whole chest. Otherwise it's just farts in the wind.