Cooldown sounds like a good idea ONLY IF these so called security companies can catch these malicious dependencies during the cooldown period. Are they doing this bit or individual researchers find a malware and these companies make headlines?
Does it matter? The individual researchers could look at brand-new published packages just the same
It seems less likely that they'll find it before you're bitten by it if you intentionally race against them by choosing newest all the time, yea?