>I really would question any "professional" network engineer that can't tell the difference between a switch and a router...

Oh the stories I could tell you.

I once had to work with a guy who didnt believe in dynamic routing.

Which wouldn't have been too bad but he also didnt believe in route summarisation or any kind of planning. So the network was carved up into random unpredictable blocks.

He sadly did very much believe in Mikrotik scripting, and so had scripts setup to disable/enable static routes based on very broad (often external) reachability criteria.

Whenever googles DNS had an issue the whole network would start flapping scripts like nobodies business.

The network was a large wisp with more than 600 pops and more than 10000 customers on its various services.

That engineer had been gainfully employed by multiple ISPs over 20 years.

I've had supposedly credible professional network engineers send me their PRIVATE ssh keys for access to something more than once. As a response to "please send me your ssh key for access to $THING"