[83SC in PA]

I just installed a pair of PF tensioners in Nov. One of them failed immediately and when removed could bed depressed with finger pressure and it was was replaced with a 'good' one. Is this memo suggesting that since it wasn't immersed in oil and pumped up by hand before installation that it is 'my' fault it failed? Seems unlikely to me since the one that didn't fail and the replacement tensioner needed to be put in a vice to depress....this alert from the manufacturer seems fishy to me.