Alexandr is a very impressive contributor to Postgres community. Met him few times. He’s on the mission to change and improve community. He has a clear vision what has to be changed, and he’s still 30+ yo and has many many years ahead. Just talking him 15 mins will save you years. Hope he can make a business out of this and find resourceful business partners.
I know where you are going with this, but I'm not sure his age is relevant as somebody 50+ yo could have many years ahead of them. Having said all of that, here's his contributions to Postgres which speaks to his credibility: