i think he meant: PMs hold value they are not investments; 50 years ago 1 oz gold bought you a good suit and so it does today while fiat looses value. You get the feeling that you are earning but its just inflation. When gold and silver do enter that bubble then it can be an investment ; lets say when you can get a good Armani/Boss suit for lets say half oz of gold. Suits are only one indicator so thats why its good to look at other things too like gold to oil, gold to median house price etc.
Given I sold over 400 oz of silver, 60 sovereigns and a few gold coins because I got married. Felt very empty and realised as the train left the station I wasn't on it!! One divorce later and I am back on the train, but I will never be in the position I could have been. Sell your silver as a last resort only.
This is the wisest investment choice you could ever make... Whatever you do, DO NOT SELL YOUR SILVER!!!!