The are no disposable numbers in many countries anymore. On the top of that you are just generating even more signal than using a single number.

People have to understand that meta-data about you is almost as important as data.

For example just the fact that your phone has signal or telegram installed is meta-data that helps to identify you. They do not need to know your name.

And for bonus:

https://www.justsecurity.org/10311/michael-hayden-kill-peopl...