Respectfully, you've missed the point -- it's to "protect potential victims from a scammer". It was even bolded in the post you quoted me from. Did you not see it? ^^" Anyway, the point of such a tag would warn
potential patrons that the developer may be a scammer and possibly safeguard them from losing some of their hard-earned money. As
depechedNode said above "Many members (including me) use this forum as a demo/knowledge database for choosing which games/devs we liked worth supporting, not just for pirating."
There are many devs out there that capitalize on F95 and other such forums as a vehicle to get the word out about the project that their working on. Don't think they don't. Most are aware of the existence of such threads on forums such as this one, and others are even active members. Whether they condone certain activities on the forums or not doesn't negate the fact that just by the sheer existence of a thread dedicated to their project helps raise awareness of it which, in turn, could bring in more paying patrons that they otherwise would not have gained, (or if they're not using a crowdfunding method, then more purchases for their project or game).
By visiting such threads, it's a great way to get
people's opinions about a developer or a project which often helps me to decide whether to support them financially or not if I was on the fence. And if a game is tagged as "SCAM" and there's an explanation in the OP, then that's a quick way to know that one should probably avoid throwing money into that project or at that developer. If despite that, a person is still willing to take on that risk, then that's their choice too but they can't complain later if they saw the warning. After all, tags are just a way to quickly spread information and offer a sense of what's in a project at a glance. Thus, seeing such a tag would be different than just taking a "normal" risk on a project by supporting an unproven dev that's caught your eye (or conversely a well-known dev team whose earned the trust and goodwill of their fans and have a proven track record). Of course, that type of tag may not be useful whatsoever to other types of users.
In any case, the "SCAM" tag may not fly on F95 because the community here, as a whole, tries to be courteous to one another and respect people's viewpoints even if they differ from their own. Every one of us have different life experiences and background, but we at least visit here due to our shared enjoyment of certain things. And so, perhaps such a tag would unnecessary incite and escalate debates in those threads that it was applied to, but on the other hand, it would quickly convey a warning to potential supporters of a project.