Polka Worship?

Polka WorshipSaw this sign on a Lutheran church building in Austin a while back. It could have been on the
building of most any denomination. The questions that popped into my head are:

a.) Is polka being worshipped?

b.) Is polka worshipping a god?

c.) Is polka the means of worship?

Answers to any of these questions fail to satisfy. I cannot help but think of the sons of Aaron and Eli, four of which were killed by YHWH for approaching Him in worship in ways He had not approved of.

Do these people think before they do foolish things? It appears not.