Are you saying that the requirements of 200.7©, first came about in the 2002 edition? I seem to remember it being much earlier, but I can’t verify that at the moment.
As for your comment with regards to splices in the panel, I concur.
The NEC is quite clear that a panel board may not be used as a junction box, however, the simple presence of wire-nuts does not make a panel into a “junction box.”
When conductors are spliced in order to lengthen them, or to relieve a “double tap,” it is acceptable for this to occur within the electrical panel - the conductors are still being served by the breakers or panel components, which is the purpose of the panel.
When conductors enter the panel and are spliced to conductors which exit the panel, this is generally not acceptable. In this case, the conductors are not being served by components of the panel, and the panel is being used as a junction box for those conductors.
The basic “rule-of-thumb” for the home inspector is that all conductors entering the electrical panel, should terminate at a breaker or terminal bar/lug. There should be no “through and through” conductors within the panel, whether they are spliced or not. As we are not “experts,” this condition would warrant a recommendation for further evaluation and/or correction.