So just by looking your one of the few who have this problem with steam.
Yes, funnily enough, a problem that sets off several problems for people with specific conditions which aren't present in the majority of people doesn't affect the majority of people. What a shocking revelation that is...
CD Projekt Red addressed a similar issue affecting a smaller number of users with Cyberpunk within 2 days of being made aware it was a problem, and fixed it as completely as can be done for a game of its type within ONE month. Valve have software which is easier to manage than the game in question in terms of the effects on the relevant medical conditions, and have not only failed to address the problem for more than EIGHTEEN TIMES as long as it took CDPR to completely fix their problem, but have directly made the problem WORSE instead of better.
At this stage in the situation, I consider Google Play to be a more viable PC gaming storefront than Steam, because workarounds that make it usable on PC aren't being actively and deliberately blocked by the platform the way workarounds that make the Steam client actually safe to use have been by Valve.
"The only one here" and "the only one with a problem" are two VERY different things. And by "here" you only mean "active in a rarely-used comment section" anyway. There's been plenty of discussion of the issues with Steam elsewhere, and I do my best to raise awareness because the weirdness of the situation is such that many affected people aren't even suspecting the possibility of Steam being a cause for the recent increase in their symptoms.
And that's before considering the number of non-medical reasons I know of for a variety of former Steam users to begin moving their game libraries elsewhere and step away from the platform, avoiding buying games there and refusing to accept Steam keys as a replacement for a non-Steam purchase. Notably their irresponsible (arguably illegal in some countries) approach to invasive DRM, as well as some people buying Epic's "they're ripping off the devs" line.