I've said before that I think tagging Newbies for "bounty abuse" is futile. Accounts with high Activity and 0 Merit have nothing to lose, because they can easily create new accounts. Worse: it makes negative feedback very common instead of reserved for scammers, which leads to more and more people (including bounty/campaign managers) ignoring the warning.
I would in principle agree with you that red tagging everyone is counterproductive and waste of time, but in some cases it's not a bad idea to write neutral feedback if accounts are connected in some way.
Maybe this feedback should show link to topic with more information and connections other members found, and it will help managers and other members when they investigate their posting history.
The bounty scams don't even care about the duplicate accounts: they pay with made-up tokens created out of thin air, designed to make the creator rich. There's no way all of them are unique projects, and I'm pretty sure a couple of teams are behind most of the ICOs, Defi and other useless "disrupting" pump and dump BS that gives crypto such a bad name. They don't care: the more spam, the more they earn!
I wouldn't put all bounties in one basket, and you should be more specific saying this applies mostly for worthless shitcoin bounties.
There could be bounties that pay in Bitcoins, maybe some puzzle solving, or completing other tasks unrelated to altcoins.
If you want to address issue of altcoin bounties than I think you should talk more with managers who organize them.
Yes, the topic title was clickbait, but I'm trying to make a point here. If tagging them doesn't work, if the forum doesn't ban their low-quality posts, and if they don't bring anything good at all, can't we just ignore them completely? Don't mention them in Reputation (sorry, I'm guilty too), don't mention them in Scam Accusations, don't look for "alts" as long as they have nothing to lose, don't tag them, but just ignore them completely?
You can always ignore them, and I am using that ignore button for many members, but I can say the same thing for any spammers.
Why would you or anyone else engage in conversation with someone who is posting rinse repeated spam questions over and over again?
I asked other members to stop doing that in other sections, but I guess they prefer getting paid for conversing with spammers sometimes.