Thanks for starting this separate thread. The abbreviate "polya" grates on me because it's so unpleasant. I have also seen "polyam," which is even worse, aesthetically. They look odd and are not pronounceable.
I think people's hearts were in the right place when they decided to take the internet complaint seriously and stop using "poly" as the abbreviation for polyamory. I get that they were trying to be supportive of what they thought was a real issue with cultural appropriation. But maybe just type out the full word "polyamory" instead of making an aesthetically grating and non-intuitive construction?
In addition, of course, the cultural appropriation issue turned out to be a false alarm. Actual Polynesian people weren't complaining about it. Across the globe, most Polynesian peoples don't refer to themselves as "Poly" except in a few regions (I think the UK was where they were having the "Poly Day" celebration for Polynesians).
And furthermore (this is the crux of the issue for me), a coincidentally identical abbreviation is NOT cultural appropriation. It's not as if the people who first coined the term polyamory were deliberately trying to refer to Polynesians.
Sometimes abbreviations are just the same, and it can be awkward and annoying. My brother is an engineer, and I do a double take every time he refers to "poly materials" or something.
I work in a Political Science department at a university. One of our adjunct professors abbreviates his class as "Poly Sci" (whereas everyone else writes Poli Sci). When that professor gives me materials to print and copy that have "Poly Sci" written on them, I correct it to eliminate this vile abomination. (And that's not because I'm poly, but because this abbreviation is flat-out wrong and terrible).
But, in general, sometimes you just have to accept that short forms and subgroup-specific terms can have other meanings in other contexts. When my mom, a retired teacher, says she's "subbing" for Mr. Brown next week...she's talking about substitute teaching. When my friend cheerfully says she just came from a CBT session...she means Cognitive Behavioral Therapy, not the kink also abbreviated CBT