I think they're a strong supporter of the Second Amendment as per the way they interpret it; they have filed a number of briefs in support of cases that fit their definition.
Let's stop with the farce: your complaint is that you don't like their interpretation, and so you choose to change the topic and blur the issue on a completely different thread to grind that ax of yours.
No, my complaint is that there's a difference between "supporter" and "strong supporter", and that if the latter is to have any meaning at all, the ACLU doesn't meet it.
How do you differentiate a "supporter" from a "strong supporter"? If I firmly believed that the First Amendment only protects pro-government speech, and filed the occasional legal brief in defense of those prosecuted under this interpretation, would that make me a "strong supporter" of the First Amendment? Would you talk about how crazy wicked cool it is that a nutty right-winger like me paradoxically has a thing for protecting the first amendment?
Or, to avoid the issue of weak interpretations of amendments, how about if I had the "normal" 1st amendment views, and had a "pro-Bill of Rights" group that spent only a token amount of effort protecting infringements on speech (or the other 1A stuff), and never to represent any such client? Still a "strong" supporter? Or just a "supporter"?
Let's stop with the farce: your complaint is that you don't like their interpretation, and so you choose to change the topic and blur the issue on a completely different thread to grind that ax of yours.