Blah Blah. But the INVESTMENTS in the account can be capital gain items. You can put COMPANY STOCK into your 401(k) plan as a type of deferred compensation.
I am doubtful that if he used company stock they were put in at their true market value, this is precisely what I mean by Gray area
Your blah blah does not add anything to the discussion and if you are ignorant about the subject matter, please stay home and don't try to add smoke so that others Will not see what are the true issues.