it's really the opposite for what I have seen and I can show you with some data taken during "ICO MANIA" of 2017.
I get some data from this topic https://bitcointalk.org/index.php?topic=2106360.0 "The next 100x or 1000x coin", where people trying to guess/suggest the coin that could receive a big pump during end of 2017 early 2018.
Plus coins were suggested here as the best coins for a speculation ... and these are the results after 3 years:
13,18% Reported a positive result.
10.83% Reported a 0 (total loss)
the others just negative results (prices go down).
(full post here https://www.publish0x.com/bitbollo-cryptocurrencies-blog/a-depth-analysis-of-bitcointalkorg-speculation-thread-the-ne-xpnnjwq )