Looks like dbrand are not having a great time with Project Killswitch, their bundle of accessories as they had to pull it from sale shortly after going up for reservations due to it causing problems.
It was a little confusing, as a reservation holder myself the link in the email to buy it just ended up going to a Twitter post. Confused, I reached out to dbrand but didn't hear back until their public announcement about what happened. Sent in an email and posted in public on Reddit too, they made a "Million-Dollar Mistake".
They shipped out a bunch of them to various content creators and news websites (not to us though…) which they said had people whose knowledge "ranged from 'casual' to 'built their own Linux distro'" and all seemed fine. Then they shipped some out to The Verge, who emailed back to note there were problems with the magnetic kickstand and the Steam Deck fan. It was slowing down their Steam Deck fan! After more testing, another unit saw their fan speed-up.
In short, the whiney Delta fan was the one affected, the Huaying was not and according to dbrand they've heard that Valve are apparently no longer using the Delta fan. So this is why they pulled the launch, as their magnets screwed with any Steam Deck with a Delta fan and obviously they can't just let that happen. To be clear, everything else is fine, just the kickstand causes issues.
So now they're going back and changing the kickstand to a "mechanical interlock system", which will probably end up a little like the fantastic DeckMate. Everyone who purchased it with the magnetic version will get a "free replacement of both their case and kickstand" which is great to see.
It's going to take a while though, with any new orders now not shipping until sometime Q1 2023, but they will still be shipping out orders of those reservation holders who did manage to get through initially.