hi many developers are using Macbook for coding. because that is a unix-based operation system which is more stable than windows. are you able to make a macos verison of plsql developer ?
but i think the root cause, is PLSQL developer is not a java-based client. that's why it's trapped in windows world. if it can consider all developers' requirements there are still some of them in linux or mac swimming pool.
I think Embarcadero now also suppliers they compiler to deploy to MacOS (and IOS and Android), so it might be an idea to see how effort it would take to port the current codebase? Just my 2 cents.