How legal are anonymous publishing services in Russia?

Question

Law in IT

Good afternoon, comrades! I recently thought about making an anonymous confession service by February 14 as a project for self-development. For a person to just come in, write his confession and then read other people's confessions on the wall. Without SMS and registration. By conducting a simple thought experiment, I came up with this question:
What if someone on this site starts doing all sorts of indecent things? For example, to call for the forcible planting of peace and goodness on Earth or some such deeds.
What threatens me as the creator of such a site? Is it possible to make such a service and not receive benefits from the Federal Penitentiary Service and other structures interested in this?
Thanks in advance for any answers or tips on which way to dig to clear up this issue!
UPD. From the answers below, I realized that, in principle, you can try, but if they complain, then you need to react quickly.