Is it even possible to be honest and polite?

It's quite possible and I've seen people exhibiting that behavior often

Yes. A bit of both. Give and take.

Of course it is

yeah but some of the honest things can be taken out of hand.

It's very possible.
Just not always warranted.

Yes, honesty can be kind.

Yes but not all the time

yes

Yes! 😊

Well, being polite is really easy. I do that all the time. Honesty requires a lot more self-discipline. The large majority of people are mostly honest, but tell little white lies on occasion.