Yes, you said it is good, and many people have observed this. Almost all coins were higher than the initial price when they were listed last year. But this year, on the contrary, most coins have fallen.
We know that the coin will dumped in their 1st release in the market, most of the user here are telling other users or suggest others to buy during the dumped period, but not all coins can recover, most of the coins stay in their low price and seldom recover from their lost. So it always depend on how you handle th situation.
No, I don't know most the ICO tokens after listed on the first exchange is always dump in the market. I have invested in a lot of ICOs, and many projects gave me high profit at the first time trade on the "official exchange", not is on the Decentralized Exchange (DEX). Example UTRUST, CREDITS, NKN, WePower, Genesis Vision, etc. these projects gave me at least a 200% profit if I have invested since ICO.