I most certainly do agree with this. Not only does choosing to not take action towards scams tarnish the reputation of  the crypto industry as a whole in the long run, but also makes the forum and the information found here to become less reliable in the eyes of new comers. Although, people can indeed go and check the reputation of the promoter or the thread creator by looking at his/her trust rating to discern whether the information or promotion is truly legitimate or not, it doesn't completely eliminate the risk of scams succeeding since not everyone who visits this forum are well informed about how things work here, specially those that are from underdeveloped countries that fall behind in both information and technology.
While I can understand that this can serve as a good lesson to anyone gullible enough to be scammed and that doing this will absolutely take a lot of work, I still think that taking action gives more benefits than letting this scams be and that whatever actions made towards these scams will be vital for the future of this forum and this industry as a whole.