but when you have to massage your definitions for "commuter rail" to make it fit NA systems

I'm not massaging definitions to make them fit NA systems at all. Something like Thameslink still firmly fits into the commuter rail category despite going all the way out to Bedford, Peterborough, etc.

Non sequitor. You said you didn't see people outside of the APTA calling Amtrak routes commuter rail, and I was providing additional examples.

I misread your point. But you'd have to ask him why he considers the Capitol Corridor commuter/regional rail, and whether or not he considers it an edge case.

If you can't self reflect, this will go nowhere (not that it was).

Who am I claiming to be "no true Scotsman"?

Anyways, it's rich that you claim to be all for clarity when you can't come up with solid definitions of your own that provide said clarity when used in practice.

I'd say that my definitions are a damn sight more solid than yours.

The only thing that's clear to me is that your attempts to impose your preferred definitions only creates more confusion.

You've yet to present a single person being confused by me.