Ukrainian nuclear weapons aren’t a credible threat to Russia, for the same reason Russia’s aren’t to Ukraine: It isn’t under an immediate threat of being wiped out, just losing territory. I think this is aimed more at the United States, trying to pressure them into keeping up or increasing aid with the threat of nuclear proliferation (as Japan, Taiwan and Saudi Arabia have done). There is also the possibility that in a Trump administration, loss of US aid could turn the war back into an existential threat where nuclear weapons could be used.
I assume people decided it had the vibe of accusing Ukraine of being underhanded (it’s not, but internet gonna internet)