You are actually right, but the point is do people saying it's bad have other ways of buying new projects coins, they are the same set who complained about the ico now the new way, why not trying something new before it also get to the point where it won't be appreciate any more.
New implementation were good as long tested and proven effective, IEO were quite advance than ICO since they will be in an exchange already unlike in ICO some coins didn't able to be listed after the ICO.