Yea i hate happy holidays too. Its totally bogus. In the late 70’s everything was Merry Christmas… then a bunch of weirdos started doing the “xmas” thing because the word ‘Christ’ was part of the word. Then Jewish people started a campaign of 2 things: 1) add the idea that on Hanukkah you get lots of presents (when that was never the idea) and 2) replace Merry Christmas with happy holidays and replace Santa with the Menorah. ( check the banks for evidence)
However, this applies to only California. I cannot comment on other states because i do not have first hand experience. I can only tell you how incrementallism changed California.
I do know in Utah ( go figure) that about 99.9999999% of that state still says “Merry Christmas” in nearly every shop because i have been in Utah.
I suspect this thing exists in New York, Florida, some parts of the south, and California.
Kwanzaa is also a California thing.