DuctOvht
Firstly, that quote wasn't from me, but from your text it appears so, which of course is, well, simply not true.
Secondly, nobody loses their medical at 65. In fact it is quite legal to fly Airbuses into your 80ies, however only in private OPS, and airline like run flight departments of big companies actually do that with the same level of safety, SOPs and usually quite a bit more training. And why not if the pilot in question can pass his medical and OPC/LPC.