ShaitanIblis

@robear Here's another solution below!
"Coconut downloader will only download vids in low resolution (540p) for me for some reason.  Luckily I found a workaround to save them at higher resolutions: You create a playlist, add the vids you want to rip to that playlist and then you can go and download them from the playlist in higher resolution.  It's a bit of a pain in the ass but at least it gets the job done.
And I just joined another Onlyfans that unfortunately has DRM enabled:
Caleb Sky (@CalebSky)
Unsubbed!  At some point here I'm just gonna quit joining Onlyfans altogether.  I can only be disappointed so many times before I simply throw in the towel and quit wasting my money.  Ironically I'll go back to torrenting all of my porn for free like I used to (the very thing they're trying to avoid with that DRM shit)."

Thank you very much, @robear. This solution works!

Welcome to the forum, ShaitanIblis
Account settings in JFF provide two options for onsite video player.  The default is JS Player.  I found that changing to the HTML5 player again allows downloads (for now).  The latter option apparently doesn't offer 1080p viewing/downloading, but rather defaults to 720p, which is fine for me. Can't say this will work forever, or even with all content, but for now I've continued my subs on JFF.
I messaged one of my long-time follows, one of the few subs I continue month to month.  He is incredibly prolific, content creation is a full-time job and it shows in his pro-level production. That is to also say that he is obviously thoughtful and deliberate in managing his online business.  He replied he didn't know anything about this change and would look into it. It seems strange that the platform implemented such a sweeping change BY DEFAULT and didn't clearly communicate its implications to content creators.
I have a few subs on OF (who don't cross post on JFF) and none has opted in to DRM controls, so for now yes, it seems OF is the way if JFF is just too much trouble.