Yes, Turbotax is downright negligent on this one, all of the official wording misses the most important aspect: This form is for reporting capital gains on sales of securities received as part of a "Qualified Employee Benefit Plan." They key is finding the definition of the term Qualified Employee Benefit Plan. In short, this is capital gains from stock received from your *retirement plan*. RSUs on your W2 do not apply, nor does an ESPP (as noted).
TurboTax need to fix this item to specify in the help that this only applies to stock received in a Qualified Employee Benefit Plan and then *define what that means*
