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Windows 7, 8 and 8.1 support will end tomorrow (January 1st 2024)
(help.steampowered.com)
Steam is a video game digital distribution service by Valve.
Steam News | Steam Beta Client news
Useful tools:
SteamDB
SteamCharts
Issue tracker for Linux version of Steam
according to the latest steam hardware survey, only 0.91% of the users still use Windows 7 ~ 8.1.
https://store.steampowered.com/hwsurvey/Steam-Hardware-Software-Survey-Welcome-to-Steam
I know it doesn't have much to do with your comment, but what you said got me curious.