I see people often making the criticism that D1 Alch claims have no downside and want some kind of nerf to stop them doing it. They are, after all, provable relatively quickly and long term might assist BD investigative efforts.
There is a factor behind the D1 Alch claim that is a double edged sword, and that is how the Unseen/Cult/NK treat you. It is beneficial for the Alch to claim D1 to lessen the likelihood that evil killing classes target them. However; when you do this, you increase the likelihood of these classes targeting BD when they attempt to convert/kill. A day that could have been wasted on you via stoneskin or by virtue of you being unconvertible has almost no chance of happening after you claim.
“Alch claim” on D1 always reads to me as “unseen/cult please leave me alone until my vote is needed”. It’s an open and subtle pledge of allegiance thinly veiled as a way of helping BD. Alchs can be of benefit via healing without claiming D1, and so the justification of “I can heal” is a moot defense.
The only way this kind of behavior that Alchs are demonstrating will change is if BD’s attitude to alchs change. They are not your allies. You should not treat them as such. They must prove their worth if they are to keep their lives. Open claiming D1 tells me they aren’t interested in being of any use.