At the time the M1 was announced and was competing against the Tiger lake, the Tiger lake was said to have half the performance of the M1, twice the power consumption, and 1/4 the power efficiency, proving that intel would never win, and that ARM was superior to x86.
One and a half years later, Alder lake-U (9W)'s performance is 80% of M1 in Geekbench5 (1230U:1463/5940, M1: 1704/7433), battery life is doubled and the laptop weighs 150g less than a Macbook Air.
Meteor lake is rumored to be difficult to raise the clock and is likely to take advantage of its power-saving characteristics, and once there, it will surpass M2 in terms of both performance and efficiency.
Incidentally, the 1230U actually has a fanless use case (Fujitsu LOOX).