Put off updating for a couple of weeks because you're got better things to do? You may end up borking your system unwittingly.
Not subscribed to the Arch news feed and intimately familiar with the packages installed on your system? You may end up borking your system unwittingly.
Arch is good for dedicated power users, who want to tinker around. But most of us just want to get stuff done, not mess with the OS.
I use Arch exactly because I want to get shit done. My way.
The only reason the Arch forums are so informative, is because people run into stupid issues on a regular basis.
Mint updates itself and gets out of my way. That makes it ideal for actually getting shit done.
Mint packages tend to be quite old, even older than Ubuntu. This is no good if you want to run close to, or, upstream versions, which Arch excels at. Of course, you can install software not using your package manager, but that defeats the point of having centralized package management in the first place and can cause problems.
These days, only Chrome, Spotify, Qbittorrent and a couple of others are the newest versions (through PPAs), everything else is just stock and works perfectly fine.
As long as you remember to check the website for manual intervention requirements....