CR has a custom agreement with WotC, so OGL 1.1 won't apply to them. They'll need to decide if staying with WotC will hurt their brand, and if so, I imagine Darrington Press will join Paizo's ORC hoard.
I don't know what you mean by "a custom agreement with WotC." Can you clarify?
They definitely have released products in some kind of licensed partnership with WotC, and they have advertised DnDBeyond both before and after it was acquired by WotC. But they do most of their stuff outside of WotC. The big ones are their Twitch channel, YouTube channel, and Legends of Vox Machina
, of course, but they have a ton of other products (clothes, comics, games, miniatures, dice, etc.) that are outside of WotC.
I suspect that at best a small fraction of their business has any contractual ties to WotC: Explorer's Guide to Wildmount
, The Call of the Netherdeep
, the miniatures that are connected to those specific publications, and some advertising.