/r/Piracy owners deserve it. They should've considered such a possibility before allowing their community to grow on a platform they do not control. So they are not "victims", just a bit inconsiderate. And there is no reason to blame reddit, or anyone, for the deletion. They are not obliged to provide their service to anyone.
On the other hand, it's thanks to communities like this one and others that Reddit got where it is today. So not unreasonable to blame them when they change their mind in the name of Ads.
> So not unreasonable to blame them when they change their mind in the name of Ads. That change of mind was a part of their business model. Why blaming people for making legal businesses?
The problem is in people who trust "free" services and expect the terms to remain the same forever.