I wouldn't take your word on it simply because you are self described as being hard to please. After all, you are biased when it comes to yourself. However, after watching the video, pay your friend Theron a complement from a stranger. He is a great pianoist.
I will let him know that. It comes from being a music student for a long time (applying for doctoral schools next year), and having incredibly high standards for my own playing. I have a joke "How do you describe a music student? someone who spends 8 hours a day in a tiny box being disappointed in themselves." Unfortunately, that attitude has become so heavily ingrained that I cannot turn it off. It ruins some things for me, but also allows me to appreciate the truly great performances and performers.I wouldn't take your word on it simply because you are self described as being hard to please.