Share-Based Compensation Considered as a Cash Expense

Just came across a 2014 Damodoran blog advocating against adding back stock-based compensation when calculating cash flows for a DCF model. His logic is that compensation with stock is akin to selling stock in the market and paying out the cash.

What is the CFAI / CFA exam’s position on stock compensation when calculating cash flows (a source would be awesome)? What have you guys seen done in practice?

Thanks!