If we look back in history, the culture was nurtured due to the nature of most seller's inbox being overflowed with tonned of queries and request. Naturally when one seller has tonnes of customers to entertain, due to a number of sales, It will get full. Esp there are high demand or the pricing is good. That was before, I'm not sure on how big currently each users have been currently allocated.

IMO I think there should be like a notification news just like the small red inbox tab where by a short information pertaining to new regulation or enforcement. I would say more than 80% of users here don't bother to read all the rules or faqs even if there are updated. It may serve as a spam in the users inbox, at least, they are notified of the new regulations, Besides, they cannot give ridiculous reasons like, I didn't read about it as the title with the mail or notification has already shown beforehand