Doing something highly illegal and finding a "community" and sharing it with a "friend" would be a stupid move. Don't ever disclose your name if you do something like this, unless you are in a safe country.
He is not an "anti-war candidate". To think it is possible without FSB approval is naivety. His purpose was to collect lists of people who signed for him (that is, new opposition that hasn't emigrated and formed naturally in 2022-2024 - needless to say, it consists of completely different demographics and people's backgrounds from the "old" opposition). Unfortunately these people are too naive to recognize the danger.