Simply not true. CITES does not matter as long as you keep it or sell it within the country you live in. Even with CITES, the import or export of exotic skin bags is annoyingly difficult, and you need a new permit every single time from the destination country. Trust me, I know, because I have done it.
I have to mention that pretty much all super-vintage exotic bags don't have a CITES certificate either, simply because it didn't exist when the bags were made. If you love an exotic bag, and the price is good, BUY it. It's a common misconception that a missing CITES devalues a bag. You don't need it to travel either as long as the exotic bag is used as your personal luggage.
I take exception to you stating that my opinion is 'simply not true' and shouting it out in bold.
There were no facts to dispute.
I would still stand by my opinion that buying something that should have a CITED certificate would be unwidse AND that a reputable reseller would not do so.