Earlier quoted context omitted.
This is what I said in a different comment: there are people like that in film too – they make films their whole life, found a certain level that they feel comfortable with and settle there. That is a perfectly fine choice and in no way should anybody talk bad about it. The only thing that bugs me however is when they try to come up with excuses why their works don't live up to the standard of other artists judge the…
Why should he expend effort getting better at something he doesn't really care that much about when he can spend his time getting better at things he does? People like you always seem to miss the thing about time being a scarce resource.
So you got me 180° wrong – if his motives were purely economical, I'd completely understand his arguments. But because it is not purely economical I see this as a vague sign that he might not value the time he put into it himself enough, which is never a good thing in the long term.