Trusting developers 100% is foolish, of course. We don't even know who they really are, so don't fall for their promises, especially promises that are backed up with a lot of hype that can attract people from all sides. Because, not necessarily they are really serious about the project, as long as they already get profit and money, they can just betray you. This I strongly agree, that dev is not your friends. Whatever they say, never believe 100%, especially for dev altcoins projects.
And the moment investing instead of being a way to put your money in projects with great fundamentals that you believe will do great in the future, becomes just a game of chicken ....
Exactly, all Devs will say that their project has strong fundamentals, a clear roadmap, and a super bright future. They promise top exchanges after release, but they don't deliver. They promise the development of the project, but the results are not as serious as they talk about.