Actually, I think CRUD itself is a good thing. Why? Because it's a description of a simple interface. You really get the elegance of a CRUD API in the corporate world. Normally, you have a bunch of stupid features and requirements that attached themselves like barnacles.
In truth, building CRUD apps places a person well above the average in the typical corporate stack. At least you're building new stuff and have a chance to shine. Unlike on a maintenance job (which is what most people get) you will get visibility if yo do good work. Most corporate denizens don't even get that. They're lucky to write 200 lines of new code per month.
My suggestion: "How to you escape the shackles and bullshit of your CRUD job and use all those great resources in your head to turn that job on its side and change the world from right where you're at?"
The problem here is that most people need an income, every month, or they start to have serious financial problems. Knowing where overperformance leads-- getting attacked by envious/insecure idiots and ending up unemployed-- I wouldn't recommend it unless he has financial security.