M1 is amazing and I bought my partner one and she loves it. However, when it came to buying a new engineer on our team a laptop, we had to go with the last 2020 Intel model. We still have some uncertainty over whether or not our development tools/environment will work on M1. Many python packages will take longer to install I imagine (if there are no wheels for the M1 mac, not sure if that's an issue) and I suspect so…
In general though, I love my M1 air, but I am sticking to my workstation (5950x, 64GB, debian) for dev work for now.