> So here we are in a philosophy subreddit, where we can reasonably expect something more narrow, so as to not automatically apply to any observable.

I ask about physics because physics is what this philosophical article is about. It is NOT overly narrow for this situation; the article is explicitly about the philosophy of time, and misunderstanding what time is (i.e. thinking it's some sort of construct and ignoring physical evidence of its features) makes it impossible to talk about this with any gravitas (ba dum tsss).

Is space physical? Electromagnetism? Your rationale applies to many things that it would be innacurate to say aren't physical, not just time.

If you haven't studied special and/or general relativity with some rigor, then you might not be qualified to answer questions about it.