It's very tempting, but my MacBook Air M1 has been great and performance wise any improvement is probably barely noticeable in the day to day that I'd end up feeling like I just bought a new chassis. Which could still be nice.. although most of the time it's in clamshell attached to my monitor. I'll have to sleep on this!
That's a good thing! The fact that the original version is still going strong is a (huge) selling point for Apple. I am glad to see a class of device meant to last upwards of 5 years.
Honestly the 2013 still works great for what I do (web, videos, and dev work that doesn't involve spinning up multiple VMs ;) ), I figured it was time to upgrade and the supply chain issues don't seem to be letting up anytime soon. I might replace the battery in the old one. I'm hoping to get at least another decade out of the M1 machine, hopefully more.