I mean… I’ll regularly go to the grocery store and see soda prices vary by 200-300% week-to-week. Sure, it’s all based around “sale” value, but it amounts to the same thing. If it’s $9 for 2 12-packs one week and then $11 for a 12-pack the next week, it isn’t an invalid markup because you had to buy 2 to get the first price.
Rolling releases for issues with newer hardware and the AUR. That’s really all there is to it. There are plenty of ways to be “unique”, but at the the of the day, nobody else is ever really going to care.
If I bought myself a 6 year old Thinkpad, I’d put Mint over Arch on it in a heartbeat. For the desktop that’s constantly upgrading, it gets Arch because it has the fastest releases and biggest community to troubleshoot stuff.