Perhaps if you had read my previous posts, you would understand my use case for such a card.
Instead you ask a question that (for own use case at least) has already been discussed and answered.
Yes, I did not read your previous posts because I was not responding to you or your use cases, I was merely commenting on the original article.
I took your advice however and perused the thread and all I have to say is you just come across as really combative over people dismissing this solution like they're specifically calling you stupid for liking it.
If it works for you that's awesome! I'm glad you have extra storage that can sit on the SD slot permanently but my argument was never "this is useless", it was "this is very misleading from a marketing standpoint".
See the problem I think is where I'm coming from the words "expansion card" carries a lot of weight; it's implying you're installing something on your machine that expands its storage in a seamless way and with no impact to performance.
Take the expansion card on the Xbox Series S/X for example, a little module you plug in and it adds to the storage pool of the internal SSD with near identical performance.
An SD card is nice and all but it's definitely a second class citizen: not only it's much much slower but it's also a separate volume.
So in my opinion while there's nothing wrong for a company to sell a low profile SD card that can reside inside a slot without the risk of snapping in half when you toss your laptop in a bag it's still very disingenuous to market it as an "expansion card".
It's not fraud or a scam or anything like that it's just very conveniently presenting something that while it has value on its own it doesn't have as much value as what the words used imply.