I don't have enough reputation to comment on an answer which I believe has a few flaws, so I'm wondering what action I should take instead.
According to this page, I should comment when I want to:
- Leave constructive criticism that guides the author in improving the post
And I shouldn't comment when I am:
- Suggesting corrections that don't fundamentally change the meaning of the post; instead, make or suggest an edit;
I don't feel comfortable enough proposing an edit, and I do feel that the suggestions would change the answer fundamentally - yet wouldn't warrant it's own answer.
To give a bit of context, the answer I wanted to comment on is https://unix.stackexchange.com/a/388117/209558. I'm under the impression that the user can authenticate as root, however if they authenticate as a user they might need to be part of the group "lp". The only thing I have backing me up is the Arch Linux Wiki, so I don't feel quite comfortable outright suggesting an edit.