A hill I’ll die on
Less/Fewer
Languages change and update all the time, thus the reason we get new words added to dictionaries. Perhaps “lmao” will one day be accepted in formal writing, but until then I will fight for the rights of “less” and “fewer” to mean what they’re supposed to mean.
If it’s uncountable, use “less,” as in, “There’s less snow during this storm than last week’s.” If you’re able to count snow, use “fewer,” as in, “There were 900 fewer snow flakes in this storm than last week’s.”