Ditto. I don't often ask for extra pairs, but when I do I have never been denied. On an F flight JFK-HKG last month, I had a FA aggressively trying to give me another. She was quite aggressive in trying to ensure I got a second...I mentioned my significant other, which is what spurred her trying to give me another to take home. My significant other has plenty anyway, and I declined. But she returned to my seat 2-3x including right before landing making sure I didn't want another pair.

The amenity kits seem to be much tighter inventory. On return flights I frequently ask to swap mine for a female version, which I gift to family members (I am a male)...because I can just reuse the amenity kits from the outbound sector I got a few days before. Often, the FAs mistakenly think I'm asking for a second amenity kit. I've been "denied" multiple amenity kits on many occasions.