I bought a macbook air in ~2012 and it was unusably slow after a year. bought a thinkpad to put linux on after that that I'm still using today (although admittedly it's a bit of a wreck now - still, it lasted for 8 years)
And it was seldomly updated, so you could get very aged specs.
If you bought a MacBook 2011/2012 you would typically get an HDD and between 4 and 8GB RAM. Software requirements/demands sky-rocketed shortly after that. On a non-Air you could at least upgrade this yourself, which gave the machine new life ("just like new")