Not at all, as in our country, bitcoin isn't adopted that much in local landmarks in the first place. Though I see this being adopted more on churches in the near future, though mostly on countries that has decent amount of bitcoin adoption in general.

I personally wouldn't. I'm personally big on hiding my affiliation with bitcoin or cryptocurrencies in general, for security purposes. If I would be able to do so anonymously, probably? Though I don't see a significant number of people giving their tithes with bitcoin in my country probably for a few years.