Disclaimer: this absolutely sucks and I'm baffled that they've made this move at all.

That being said, I don't think folks have noticed the very specific situation where this is the case:

Users who redeemed digital copies of a Blu-ray or DVD purchased from Funimation were granted access to the streaming service, where they could store and stream the purchased program or film.

They are very specifically removing the free digital copies that came with buying hard copies via Blu-ray or DVD. It still sucks, but no one is losing a digital product they outright bought.