To clarify for you:
I and many others clearly acknowledge the myriad issues with Biden.
As a human, his age and health are of serious concern.
As a candidate, many of his actions, such as the dogged support for Israel are massively reprehensible.
The point is that focusing on a voice or a stutter is not his platform (which, again, has massive issues).
Keeping trump out of the Whitehouse is all that matters, and if someone is gonna fixate on a geriatric person's ability as an orator, and not their policy decisions, that's junk.