Hello As long as everything is done transparently there is no need to worry.These kind of communities are a normal thing it is just that people don't hear about them too often.
Will the tokens sold to those kind of investors be locked and how long will they be locked?
Yes, we can't blame the members of the community to worry a little because of having no constant communication with the developers and teams. They are just trying to track the progress and status of the project. Hopefully, the team will at least release some useful information for the satisfactions of the people.