Hi @beriberi, love this post. We've been there too with homeschooling. Just feeling a little guilty if you don't do everything yourself as a parent.
I would say 'outsourcing' is not lazy but smart. If you have the resources and the opportunities locally then it is a good thing to offer the children a wider range of experiences with people who are expert in their field.
It's like pick-and-mix education where you get to chose only the best chocolates in the box. Just leave the hard toffees for someone else.
The pick and mix chocolates is a good metaphor - I feel incredibly fortunate that I can arrange this kind of life.