[2022] Not on sale during survival fest?

Yes, not on sale this time. I've asked, and it's most likely because they simply forgot to opt-in in early June (when the sale was announced by Valve) and couldn't opt-in after because Coffee Stain Publishing too was on vacation in the last 4-5 weeks. They're all (Iron Gate too) back now, btw.

Just to be a bit transparent.

You are probably referring to this comment? I was talking about when to expect the new blog post, not when they're back (just said soon in that regard).

Anyway, next sale will be Winter Sale I assume. Steam Next Fest starts on 3rd Oct, but only upcoming games are eligible (don't think EA counts as upcoming since accessable already). Dates for the Winter Sale are TBA.