I agree. The Arduino brand isn't for professionals.
But let's say tomorrow they come together with bundle/partnerships to create a new, great dev environment, very easy, that a mechanical engineer can prototype a great robot for a niche use case,and continue to use that chip and code, with some changes in V1 production ?
Is there value to the Arduino brand and community than ?
Arduino is used by many professionals. It is cheap enough that you can buy it on your corporate cards and you boss won't ask many questions. As such many products start with an Ardunio based demo, and if/when the demo is a success it moves to a real company project with a real budget.
The question though is does this add value for the owners of Arduino? All too often when a project moves from the demo to real engineering (making a demo something you can sell is typically about ten times harder than the demo) you select all new hardware.