Mind explaining first, how do they determine if a certain person should be trusted or not??.. Because you can't just expect people to blindly trust someone just because they are listed as "trusted" on a newly created site particularly.

Sites like these are helpful when gathering data to come up with a conclusion but I'm also seeing some people who completely relies on them which is wrong, you gotta do the background checking properly.

You can not blindly trust any service. It is necessary to analyze the projects themselves - look at the team, read the documentation, look at the projects that have already been implemented. All this, in total, will guarantee that the project is real.