There's a great website called geizhals.de which gives you a price comparison for a lot of different online stores for each product and there are almost always multiple stores that sell it cheaper than Amazon.
I've seen one today and one yesterday. It's basically a post saying "Here's this great software that does this and this. Download a cracked version here for free!"
It looks like it either didn't get ejected properly and something is corrupt or you're mounting it wrong. It's probably the first tho. BTRFS has very good commandline tools that can help you fix this.
It has a lot of differences to ext4 but it's still just a file system. You're not gonna notice any difference just normally using the drive (aside from copying being instant). I've never heard about it causing corruptions on different kinds of drives. I use it on 3 SSDs and one HDD and have no issues.
I have a Valve Index and the Vision Pro seems like a downgrade in many ways, at least for gaming. It doesn't even have controllers, so almost all games won't even be possible to play.
I have it running on a Raspberry Pi 4 (with a lot of other stuff) and it works great. I'm only direct streaming tho, it's too slow for transcode I think.
Monero's POW algorithm is very different from most others tho because it brings in randomization, which makes it way more efficient to use a CPU instead of a GPU and distributes what miners mine, making powerful systems get less and slow systems get more.
I was thinking of Augmented Reality and was very confused