That the Framework 12 is not extremely lagging behind the M4 (subjective comparison) might lead one to believe that it would be competitive with an five year old M1 Air. Taking a quick look at "Cinebench R23" from 2020 [0], Macbook Air M1 comes in at 1,520 and 7,804, which compares favorably to 2025's "Cinebench R23" in which the Framework 12's i5-1334U scores 1,474 and 4,644.
The answer is it isn't competitive performance-wise. Given the M1 seems to have some native Linux support through Ashai, the Framework's advantages over the 5 year old MBA M1 seem to be user accessible hardware changes, touchscreen and longer hinge throw.
0. https://arstechnica.com/gadgets/2020/11/hands-on-with-the-ap...