I agree, butting heads with him isn't ageism at all. Hillary was old, too, but she wasn't constantly stumbling over her words. She was on her game nearly the whole campaign, and so is Warren this year, for example, even if I'm not necessarily rooting for Warren to be the nominee. I wonder if Sanders or Warren were to say the exact same thing to Biden as Castro and in the same way, would the ladies of The View still disregard it as ageism? lol The truth is age is individual. Some people are with it their entire lives, others not so much. Joy and Whoopi are a perfect example. Whoopi isn't even as old as Joy, and yet she's always fumbling, inarticulate, discomposed, and nonsensical. Barbara showed her age much worse than Joy, too.