The days of launching an STO, IEO, ICO and other fundraising events to dupe gullible investors are over, the days of tokens and coins being sold to make teams wealthy while investors lost out such as in 2017 and 2018 are over.
I wish I had your optimism, but I don't. The days of gullible investors on Bitcointalk.org might be over, but that's because we've become a bubble of jaded cynics. All you have to do is look at all the ads on coinmarketcap, twitter, or the plethora of blockchain explorer to see that they're still going strong. If those ads weren't working, no one would pay to place them there. The majority of people are not as experienced with these tricks and scams, and still fit the "gullible" description.
Case in point:
https://toronto.ctvnews.ca/investors-scramble-to-recoup-money-from-23-year-old-crypto-king-who-allegedly-owes-35-million-1.6078121