As someone who has been on the Linux camp all along, what will I lose, software-wise, if I change to using M1-based Macbook Pro, if a) I just use MacOS b) I use

As someone who has been on the Linux camp all along, what will I lose, software-wise, if I change to using M1-based Macbook Pro, if a) I just use MacOS b) I use Ubuntu or Debian on Parallels, say, compared to running Ubuntu on a Thinkpad? Hardware-wise, I think the biggest hurdle for me would be the anemic lack of ports compared to most non-Apple laptops.