They don't!
Why do so many people throw around "trigger" these days? Instead of making such narrow assumptions it would help if more people tried to look at the bigger picture and the WHOLE story!
Patreon did NOT start as an adult / adults only support service, they started as a service for creators of all types and only later did erotica, porn, porn games etc. come along.
Now for the BIG picture / whole story
Patreon is a company, it needs to stay in business. Just like creators, patreon has rules and laws it HAS to follow, not just from CC companies but from countries and organizations.
In order to be successful, they need to make and maintain a safe, attractive and profitable environment for creators AND patreons AND visitors (potential new creators AND patreons)
If they choose to not follow / to fight the rules and laws, they run the risk of loosing investors, access to CC companies, getting blocked in certain regions etc. This all adds up to being less safe, less attractive and less profitable and potentially loosing members to other services or at worst shutting down.
The
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on patreon is small and within in that group are smaller groups, incest, rape, beasty etc.
Should patreon really risk it's business and the livelihoods of
MANY other adult and non-adult creators just so a handful of dev's can add incest or beasty to their games? That does NOT make sense from a common sense standpoint, logical standpoint or business standpoint.
You asked "Why does Patreon try to control the art and minds of people?" that is you making 2 really big and INCORRECT assumptions.
1. patreon is in charge of making the rules
2. patreon has a choice of following the rules.
and to lay it out simply
1. If a creator wants to continue to use patreon they HAVE to follow the rules!
2. If patreon wants to stay in business they HAVE to follow the rules!
i.e. patreon is in the same boat as creators and yet instead of following the right course and trying to get the rules changed or at the very least blame the RIGHT group / groups, everyone just blames patreon.
Patreon is not big enough, powerful enough or influential enough to decide that or even get a say in it. Countries, Corporations and Companies do and patreon has to follow their guidelines.
...and there are rules for all of those too and patreon did NOT create them, they just have to follow them like everyone else.