In the general case, to get some feedback about the project. What is so bad about it that people feel like it a negative contribution to the community?
In this specific case, because I don't want to get into a "he said/she said" argument about the serial downvoters. So by asking to explain it, the public can gauge by themselves who is being reasonable.
There are three people here who are telling you that they don't see "downvoters for disagreement" as normalized practice. I presume all three of us were also on Reddit, and we can all help shape a different culture to here. You talk of "bringing Redditors" like Reddit users are complete different species than you.
I want to bring people. Lots of them. The majority of them will not be interesting to you or me. That's okay. What made Reddit so great was that it attracted so many people that it had a really long tail of niches.
The Fediverse needs people. And I am not saying that because I am seeking "power" or "influence". I am saying it because if we keep this reactionary "it's fine like this, keep the barbarians away" mentality, the whole thing will stagnate and die. And I don't want to lose our best shot at bringing back an open web for everyone.