Oh, I get it. Yeah, I pushed back on this for a while and then just let it go. I actually think the choice to use “parent” was good — much better than some of the other choices that were bantered around in the prerelease program for a while.
Ultimately, I think Bevi Chagnon explained it best in her reply in that thread (which I’ll copy here, for others who are curious):
Some background on this issue: https://www.cnet.com/news/twitter-engineers-replace-racially-loaded-tech-terms-like-master-slave/
It's not just Adobe, but all major software vendors are correcting common terms with ones that are more neutral on many levels:
• Whitelist becomes allowlist.
• Blacklist becomes denylist.
• Master/slave becomes leader/follower, primary/replica or primary/standby.
• Grandfathered becomes legacy status.
• Gendered pronouns (for example "guys") become folks, people, you all, y'all.
• Gendered pronouns (for example "he" or "his") become they or their.
• Man hours becomes person hours or engineer hours.
• Sanity check becomes quick check, confidence check or coherence check.
• Dummy value becomes placeholder value or sample value.