I bought a used M1 MBA for that reason. It partially helped. It already had a little dent toward the back somewhere and the keys were already starting to go shiny (which is one thing I would usually try to delay as much as possible on a brand new device), so it was definitely used.
Even so, I clean the keyboard regularly to get the grease off, I clean the body of the laptop... stuff that I didn't used to do with plastic case laptops.
I did the same thing with my 2020 Intel MBP - until the M1 came along and ran circles around the intel machines. The MBP has been demoted to secondary computer since. It makes me oddly sad.