It was the first one out, making you the experiment. Then, it was practically immediately discontinued, giving way to M2 and then to M3, all that within 3 years. I am actually using a 2018 15" MBP, which is quite old even in Intel's processor range, but that chip was used all over the world in all kinds of computers, so I was not the experiment, the processor inside was well tested, and used even today on some new computers. So, considering the "new" M chip range, M1 is quite old, as within 4 years, Macs with M4 are released. That's why I think, one should consider at least M3, if one is going into the M-chip world. Usually, companies are quite happy to forget the first one out, as quickly as possible, hence the discontinuation.