I don't think any consumer knows exactly how limited these will be going forward. But it's possible this ends up being the last production wave.
In all the articles I read, including the blurp by Wario64 and the recap by Spawn Wave, I don't ever recall seeing anything about production of these LE's.
My understanding was, these were kept on reserve post-production, in case of massive issues. With no issues Nintendo is dumping their horde in the absence of regular Switch's. When you think about it, Nintendo can't keep basic dockable Switches on store shelves - why would they re-manufacture limited editions (production is already super slow). Granted they will all sell nicely .. but ... umm..
My money is on they were made earlier this year and sitting around as a fail-safe. And since ACNH was a huge success, this release of old stock would help reduce the stress for someone trying to find a Switch. Nintendo comes out as the champion against scalpers, and makes customers happy! Win / Win.