I think you're projecting these strong negative emotions like "hate" onto posters who clearly looking to jokingly take cheap shots at Valve over their thin games development slate over the past few years. Valve's work with Vulkan and VR and all their other legitimately great contributions with their non-gaming activities are mostly relevant to developers and not gamers, and so I personally think it naive to expect gamers in general who mostly won't even know what Vulkan is, to care about that stuff. These folks care about games, games Valve has barely been making since they shifted focus.
[...]
None of this really takes away from the fact that people's ire at Valve's seeming abandonment of games development (which I personally admit was not total), is based on their primary interest in Valve as an organisation being in their games development heritage. Once it became clear that Valve had far less interest in making games the way they used to, many of their fans turned against them. I don't see it as difficult to understand the reason why.
Also, people throwing shade at Valve no longer making games (whether that's true or not) isn't or at least shouldn't be considered as being disrespectful to other posters who actually care about Valve's non-games development activities. They're attacking Valve, not you; regardless of how misinformed their attacks might be.
I wonder how many of these posters - people who don't care about non-games Valve - game first-and-foremost on PC, and how many even read PC-centred websites. I also wonder how many of the people you mention are wilfully ignorant, and how many genuinely just don't care about the details. Obviously, not everyone has an interest in the technical details, and that's fine, but if people are going to complain so vociferously - with so much venom, and so often - then surely it behoves them to not be so ignorant about the company they're complaining about, with such paranoia and misinformation. It genuinely wouldn't be hard for people to become more informed about Valve (and Steam). We are, after all, on a website dedicated to games, and in terms of learning more about various things on the first page of gaming side alone we have:
FRAME DATA and fighting game jargon feels like learning Chinese. Can we simplify this?
[GamingBolt] Graphics Analysis - God of War: Arguably The Best Looking Game of All Time
What did Horizon ZD do to make 30 FPS so smooth?
Television Displays and Technology Thread: The ERA of OLED is Now
All games with PS4 Pro enhancements
It's not a hard or unfair ask -
I think - that people who post in Valve-related threads with, for example "valve is.. not a game company anymore" (and such like) verse themselves in what the company is (and has been) doing,
just like they would be expected to in a console/monitor/TV/speaker thread. And, indeed, my point (badly phrased, sorry) about respect was not about people throwing shade at Valve, but people disrespecting those of us who
do know what Valve have been doing, and
aren't bitter about the lack of single-player games. Many of us would
welcome different viewpoints on the value of, I dunno... a 4K Steam Link, but instead people post things like "Valve Stan", and that's another user in the ignore list.
Anyways, I'm trying to learn to be less argumentative, so I hope I got my point across without being all "rarrrrrrgh!" :)