'having the aptitude' is important. I suck at painting and drawing. I'm not going to be successful doing anything around that realm. I write instead.
Why not something positive like "Love what you do and you can be successful, that's all that matters!". Sounds better IMO.
Because that's not how he got to where he is now. You can't choose who comes onto the platform, nor can you choose what others find valuable enough to vote on.