Thanks for reply.Yes, I'm glad you ask, there is a problem. Renpy save files support code fragments and thus using random save files from anywhere on the internet can be as harmful as running any software (per se even the games themselves) from random sources on the internet. If you trust a game creator or well known modder of renpy games to run their code you mightalso accept provided save points from them. But any random user in the forums you should not trust.
Stay safe, don't stickyour dick in crazyrandom saves in your PC.
See this renpy support page for details:
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I understand your point. But I think there's more than a safety reason. because I've used saves for other games and had no problem. Also you can get them from well known users, not a random person.
P.S: I'm not judging anyone, I was just curious.