Would you say that non religious people still can celebrate Christmas?

Well I woke up after just 4 hrs of sleep and my brain got caught up with this stupid sentence my ex said... so here we're haha

Last year he called me during Christmas (after he already broke up) wish me a great x-mas, asking how I'm etc and his sister had invited me for dinner (I didn't go) but like he wished me marry X-mas and then said "oh wait you you're not religious anyways hahaha i don't have to congrat you" (he ain't that religious himself smh) and I was like just cause I'm not religious doesn't mean or family doesn't celebrate or that it isn't important to us.
I think there is more to Christmas then Jesus's bday, like getting together with your family and expressing your love and appreciation for each other and like my mom still does a Christmas dinner and I just never attend cause my stupid stepfather is there but I would love to and I will do Christmas dinners in the future and just for now I'm spending them alone

Anyways what is your opinion?
Would you say that non religious people still can celebrate Christmas?
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