4. High volume on the listed exchange doesn't make a project clean from going scam.
This particular point could benefit for some people where they can make some quick profit when they buy it low before the scam begins, in early days you can do that easily but it's rather difficult to do it now.
Right. It is better to sell quickly while the price is higher than the purchase price to make a profit because usually coins from new projects do not last long and tend to experience significant price drops even in the long term sometimes disappearing from the exchange. Therefore, if we invest in a new project, we must be good at analyzing it and must make the right decision when to sell.