I'm sure most people aren't uploading with any malicious intent. They're just uploading the sims they're most proud of and, if they are CC users, it stands to reason that their sims are going to have CC on them.
It doesn't really bother me. When I look for a sim to download I'm looking for unique features, not hair, clothes or makeup. If a sim shows up bald or with Base Game default clothes on it's no big deal to me as I'm going to customize them to suit my taste anyway.
@RhiiJayy: I also don't see creations showing CC unless I click the Advanced button when I'm in the Gallery. Heck, I can't even see my own creations containing CC in my Library unless I click that button! LOL
