I'll make it really simple for you...
Older people feeling less inhibited to say the offensive things on their mind does not make the offensive things on their mind any better.
Alzheimers or "getting old" doesn't create racist/offensive thoughts. Just means they're likely to say them where normally they'd keep it to themselves.
Kind of like excusing the rantings of a drunk person for being drunk. The alcohol didn't create the rantings, just made the person relaxed enough to verbalise them!
So google "old people say racist things" all you like!
