10 years ago I was working at a place that still used an Apple ][e
It controlled a ROM burner that was vital to the manufacturing process. In a back room was a stack of backup ][e s just in case the production one should ever fail. In the years I worked there it never did.
MAS*H was an amazing show and it was moments like that that had a lasting effect on my world view. I did not realize it as a kid watching it, but I do now.
4GB in 2023 is comical. My Lenovo tablet has 6GB and I think that is really the new floor for any kind of desktop use. I have a 4GB Raspberry Pi and it makes an adequate desktop but it would still be better with more RAM.
The story lines they fabricated were (mostly) formulaic, the effects were (mostly) poor, and the characters were (mostly) unlikable. Apart from that I liked it! :P
It had a few moments that I enjoyed but overall it fell flat because the characters where flat.
BTRFS is honestly really great and has been for the last few years. Dont take the word of random people on the interwebs, check out some modern sources of info on the subject. Some people love to complain about RAID5/6 but if you use BTRFS the BTRFS way then it is solid.
With that said, if you dont need snapshots, drive mirroring, sub volumes, bit rot protection etc then EXT4 is hard to beat for reliability.