Noticeablely 5E kickstarters have dried up and others are changing their projects prior to launch however a Nightfell KS for 5E launched on Tuesday and is doing very well. For the few left in that space they may find they do even better than before since they may have less competition.Yes, but sadly we need to distinguish between
1. Legal reality, that WoTC almost certainly cannot legally revoke OGL 1.0 licencing of their SRDs even for future products, with
2. Commercial reality, that any future Kickstarter still including OGL 1.0 is likely to be seen as tainted by potential backers.
We can both advise #1, but the people like my friend, with money in the game, have to think about #2.