Protestants aren't Catholics. It doesn't seem unreasonable to me that they might wish to caucus as Protestants. In a way, it's sort of amusing, as I've often seen Protestants deny that they are Protestant, and now they are caucusing as such. As long as they're not referencing Catholicism, I have no problem with it. I wish them well.
sitetest
That's pretty much an assumption just as Catholics declaring anyone who isn't Catholic is Protestant.
Either statement is true for some.
I've seen Catholics deny they are Christians and then some declaring that they are.
It's been said that if anyone is ever a Catholic, they are always a Catholic.
It has also been declared that if someone is Baptized a Catholic that they have a non-removal "mark" similar to "branding" (which inspired me to search the scriptures as the Bereans did and never found it in God's Word)
Some also declare that if anyone is baptized into any church they are baptized into the Catholic church.
Then I've seen people from a particular belief system say that if you don't belong to it you know nothing about it and cannot say what is believed by it.
Then sometimes they will expound upon other denominations as if what ever they declare about them is true.
Such is the nature of vigorous reasoned religious debate.