Last year I had a Christmas meltdown.
My job is really busy in December, and involved lots of Christmas themed organisation. I was also working Saturdays. My eldest child seemed to have a Christmas play, carol service or convert every week (she was in two choirs and two orchestras pre Covid and does other activities on top of that)
My youngest was a non sleeping,just toddling 15 month old. We had playgroup parties to attend and in one case organise. We had elderly relatives who wanted visiting throughout the season as they wanted to see the baby.
We have lots of people to buy for. I am the only one in the house who drives.
I am, and always have been, in favour of a simple Christmas. Crisp walks in the woods, making wreaths and paper chains, baking and listening to carols.
But last year, oh my God. I was exhausted. I spent all of December like a blue arsed fly. I had no time to just have down time with my family. Literally not a minute. And my DH, who is absolutely one of the good ones and who more than pulls his weight the rest of the year - just didn't see it. Total blind spot where Christmas was concerned. I do enjoy the preparation usually so he probably assumed all was well and didn't appreciate how manic my life suddenly was.
Long story short, on Christmas day I caught a bug and soldiered on for the sake of the children. On Boxing day DH caught the bug in a milder form and went to bed. I fucking went mental at him, absolutely mental. Couldn't look at him. Was done with Christmas.
This year I dropped the part of my job which required the Christmas prep and have delegated much of the present buying and wrapping to DH along with sundry other festive tasks. Covid has taken care of the events, though I do miss them - we just had to go to so many.
DH really is a sweetheart and was gutted when he realised how exhausted I was and how much effort it all took. So basically I think YANBU and it's largely because even otherwise decent men have had mothers who "do Christmas" - in many cases because they enjoy it to be fair - and they simply don't realise how much work it can actually be.