So I guess Bungie has a hard "no" on deactivating cross save for those that want to do so after a recent silver purchase (see TWAB). As stated by many others, I don't care if I can't reactivate cross save for another 90 days. Heck, I don't even care if I'm permanently banned from using cross save again. I'd just like to play on my original PS4 characters again. That's all. Pretty simple really.
Thank you for your report. If currently logged in, please log out of Destiny 2 on all platforms. Once you log back in, your account should be configured with Cross Save enabled for your PS4 characters.