There's also a difference between "Legal" and "This is a good idea," just to be clear. I just hate blanket statements that you "can not" and "never" that are misleading.
Part 2 of the argument:
How are the Regionals upgrading 100's of Captains a year that don't have the requisite PIC time for an ATP? I know they're counting their SIC time as "PIC Time" towards it (i.e. every other leg), even though the pilots are not logging it that way in their Logbooks...what is the legal citation for this or is it covered in Ops Specs?