Think what you want. You ain't getting what I am saying.
3/4 is 3 quarters to the bar. Nothing more nothing less.
4/4 is 4 quarters to the bar. Nothing more nothing less.
3/2 is 3 halfs to the bar. Nothing more nothing less.
6/8 is 6 eigths to the bar. Nothing more nothing less, unless you do the math. It's mostly in two. Two sets of triplets.

Polyrhythms are abundant from baroque to modern jazz AND classical. The way they're taught is horrifying. How many possibilies exist on just ONE beat? Physically or mentally. (perididdles and the pentultimate) come to mind. Most people shift from one beat to the next. As a listening person, most have no clue of the time signature. People that write in odd ball time signatures, will not be played, and in my view, shouldn't. This might have been cool to do long ago, it's not cool now. It's far too erudite and lonely.

And as for 7:4 or 9:8, you ain't listening. My example was a 4/4 bar. I've yet to see a program do what
I ask it, without modifying the algorithms.

Like it or not, that's the way it is. Programs are performance oriented. No one can literally write a performance and be readable. What exist is a facsimile.
Sorry.

Refuting what others say, is certainly not very kind. Especially in a forum called guitartricks.