Depends which "people". Keep in mind the vast majority of accounts here is held by relatively few  (pretty sad and desperate) individuals out to capitalize on freebees, signature campaigns and referral links and who will do anything for a satoshi.  Once they saved enough satoshi's to buy something somewhere, they will often gamble it on a ponzi, hoping they got in early enough that by promoting the heck out of it, they can make sure the ponzi survives long enough, while cashing in refs and sig bonuses.  You are not going to 'change their minds', because they dont care. They may be responsible for the majority of posts,  because they need to up their activity level and seniority,  and spam their signatures. But they are not the ones spending significant sums that keep the ponzi's going.

Im hopeful, possibly naively, that raising awareness will have at least some tangible impact among the silent masses that do provide the real funding.  You may not ever hear from them, most of them may not even have an account here (see pbmining collapse, all newbies coming out of the woodwork), but Im assuming they can use google and once in a while read a post that makes them think.