steamcommunity.comは安全ですか？

While Steam is a generally trustworthy platform, there does appear to be evidence that the company behind Steam, Valve, engages in censorship and prohibits free speech in some areas. One example can be found here: https://steamcommunity.com/app/1294810/discussions/0/3763355849146372550/?ctp=50

Steam is an awful company and has ruined PC gaming. They extort you, requiring you to buy at least $5 USD of games directly from them, just to remove the limited account restrictions. If you don't buy something from them at least once per year, you will be restricted from using parts of the website. When they stop supporting an operating system, for no legitimate reason, they prevent you from playing the games that you bought, and your only option is to buy a new computer if you want to continue playing.