I'd be happy to address your points.I made literally the same exact argument against @Eusebius Erasmus months ago on this very thread and now I'm agreeing with him. Again, I would ask you to comment on the logic of my last two points.
Since I made this argument, and especially since you're a catechumen, please forgive me if it really was me that gave you these ideas.
Putting pinecones and ornaments on a tree, especially Christian ornaments, during a holiday universally recognized as celebrating the birth of Christ is incomparable to a holiday where kids dress as demons for candy that will give them diabetes and a sugar addiction.
I don't think participating in a discerning way is necessarily endorsing the excesses of the tradition. I mentioned St. Nektarios is a previous post because I think he shows us how we can participate in these things in a holy and discerning way.
I think we can agree that smoking is sinful, or at least it can be. But St. Nektarios used to work (from what I remember) at a cigarette factory and wrote quotes from Scripture on them. Are you prepared to say he was wrong by participating in this? Of course not. How about Christmas? Is it wrong to work as a bank teller at an institution which makes money off usurious loans? or a corporation which celebrates "pride month"? How far do you take this principle?
We can both agree that there are lines to be drawn and at a certain point we shouldn't participate in institutions or traditions of the world, but it's not always clear as to when that is. Which is why we must be discerning.