The problem with this right-wing Christian party is that in principle it favors a Christian, Calvinist theocracy, and refer to Romans 13. This scary aspect is always downplayed, but it is there alright. If they try smuggle a loophole into general legislation which is pro net neutrality, one has to be extra vigilant. The Dutch Labor party was not.

I would rather not take this line of argument ("what is in it for me"?).

The situation is a lot more complicated than that. You do not pay the license, or at least not only, to access BBC's content, but also to maintain a public broadcasting system (in UK, without ads).
The situation changed quite a long time ago when also commercial TV was made available, because, so many an individual user argued, "why pay for the BBC license, if I only watch Granada"?, so many an individual did not pay the license, and risked the fine.
In the Netherlands (where alsmost everybody has cable) the cable TV services have been privatized to a great degree, but on the government's condition that commercial cable providers also give access to public broadcasting services, within reason, that is.
I am quite happy with that situation, because you can bet your boots that if the cable providers would be the only ones to decide, they would get rid of a lot of channels that are not very interesting commercially, whereas I happily pay for x channels of trash, to watch the ones I do not regard as trash, or that at least do not dish out trash most of the time.