Thanksgiving [but, in Canada]

Wikipedia tells me that today is Thanksgiving in Canada.

One, why can we (as in, the US) have today be Thanksgiving as well? Yes, I understand it's Columbus Day, but nobody likes Columbus any more (or so it seems) and want it to be Native American Day or Indigenous Peoples' Day (as it is in some states already). Instead, let's just be thankful that we can live here, realize that history has been horrible (to many, many people) and it can be a real holiday after all (because nobody celebrates Columbus Day, even the government does only sort of - schools are still in session, but mail is not delivered).

Two, why can we (as in, the US) not have today as Thanksgiving as well? We like holidays, and since we only half celebrate our own Thanksgiving (thanks, Black Friday sales), maybe a second one would be fun? And possibly more enthusiastically?

But, realistically, the Canadian version sounds better over all. Wikipedia also says that it's a "general day of thanksgiving" in regards to a "bountiful harvest" that they have been "blessed" with.

Any reminder to be thankful for what we have or may have or have had should be most welcome. Whether it's our own holiday or not (and again, "our" means of the US).
That's good enough reason, right?

So, Happy Thanksgiving to our neighbors North.
And may we keep a similar state of mind down here.

~Havok

P.S. Plus, a holiday that's widely celebrated on a Monday here? It's outrageous - and, probably, most welcome.