It takes two is what I've found. I build software on a System76 laptop running 18.04. That's pretty much a perfect dev environment with the advantage of physical function keys -- kind of essential if you spend lots of time remoting using byobu. I keep a MacBook for Keynote, business docs, conferencing, and to carry to customer sites for presentations.

When I developed on a Mac, it used to be nice to have an integrated environment. I really liked having the iPhone/iPad/Mac ecosystem available even right on my working dev laptop. But dropping function keys, along with longer update cycles, indicates my workflow isn't Apple's priority. I've found the transition really easy, and I now think of Apple devices as appliances, not computers I can program, which is what Apple wants me to think anyway.