But you are- you play Sims!
It's no problem really- anyone who makes content for Sims games can upload there, they just kept it by request or invite to prevent non-simmers from uploading there. Always good to have more than one place to host your files, if you have a google account or mediafire or something, you could upload them there too.

OOF. Internet Archive getting DDOSed? Wild. Not on my 2024 bingo card but maybe it should have been.

(For me when I went and got a Sim File Share account I did the world's fastest Google and found someone had posted a handful of invite codes just out in the open in a Sims reddit. Used one of them half thinking "I don't think this is the intent of how to give these codes out for this site" and half thinking "well, I suppose if I use it then it's goin' to a Simmer!" If codes hadn't been a top result I probably would have just requested a code and then waited to get it. And then no one here would have been able to enjoy Table 1 square as fast. )

Yes, it is true unfortunately.
https://www.wired.com/story/internet-archive-hacked/

I repeat, anyone who wants a SFS account to share their Sims content, PM me!