Exactly this, sometimes up to 30 comments and likes, all by the same spam bot. If you call out the spammer below his comment the bot reports you and your comment will be removed.
I just report the top level comment as spam, and it disappears for me. I feel i have done everything i can at that point, no need to engage spammers.
I've tried this, it does nothing, I visited the page 3 weeks later no help. Neither does this script give instant feedback it still manually has to be actioned by a human. I think this tool is only useful if you own the channel and use it. Otherwise, it doesnt matter. YouTube just doesnt care.