Eventually, after saying their primary purpose is to get Democrats elected, you have to take them at their word.
Is the question “Should they be subject”, or “does the law subject them?”
The answer to the first question is no, for all the reasons stated here. We all have a right to say what we want, to support who we want, to do what we can to get the people we want elected.
The answer to the second question I believe is yes. I think they are in violation of the election laws as they are now unconstitutionally written.