Some people think yes, some think no. Personally I don’t think so.
The devs have ultimate control, but there are many other people contributing. If people really don’t like the direction, they can fork it and build the stuff we want.
Sublinks is an example of this, where a group of people are building a Lemmy a compatible platform that focuses on things the devs don’t seem interested in such as moderation tools. Kbin has an equivalent Mbin, as the Kbin Dev seems unable to keep up and unwilling to delegate.
But ultimately, open source means we don’t have to worry about this stuff until it actually becomes a problem. Also, sometimes you come across as a dick because running an open source is demanding, unforgiving, and you regularly face people who feel they are entitled to have you do they thing they want you to do. So it’s hard to judge, really.