It is necessary to restore confidence in the ICO as a whole since over the past two years the reputation of this area of financing has been severely damaged due to fraudsters.
Now conducts IEO instead of ICO. But I think that it will be a lot of scams among IEO too, because there are a lot of exchanges where IEO is conducted and they do not check the projects.
There is no fundamental difference between ICOs and IEOs, these are investments in new projects. Its all about attracting and retaining an audience.