As a full time 40% keyboard user, I take issue with the sentiment that the form factor is impractical for development. Holding a layer modifier to access symbols on the home row is less work than moving to the far reaches of a 101 key board, and often having to hit shift as well anyway!

I wrote an article on the subject recently if you're up for having your assumptions challenged: https://callumoakley.net/posts/48-keys-are-plenty