Those who have been around here for at least 2 to 4 years, definitely will never consider any new project. This is because, even the new projects are profitable, it may fetch some profits only for short terms due to initial hype, heavy promotions like bounty campaigns and airdrops and then dev's pump and dump; but unfortunately no dev continues these for longer period of time to make their project get familiar among all crypto people given that a new project with at least one real use-case.
Moreover as per my personal observation, 99% of new projects are introduced by same dev or group of dev to suck naive investors' hard earned money. So my suggestion would be, never fall as a prey to those greedy/scammy devs' traps. Follow a well established projects to risk your money.
If more than 50% of altcoin lovers agree with me, we will see ETH testing new high every 4 year at least along with bitcoin. But, as of now, we ignore real use case based projects but running behind new projects to get scammed.
With their experience, they know that most new projects are riskier than the older ones but they are also aware that some of these new projects can pump up in a short period of time. So, they can also use their experience to take part of it. If a new project has at least one solid use case.
A short-term promotion can be enough, and the project will just continue to attract investors on its own. The money can be use instead for continuously developing the project. Each project has a different developer but we can verify them if they are legit and see if they involved on a previous crypto project. If they are and if that project is not shady, then I don't see anything wrong with that.