Polls suggest the number who would disagree is somewhere north of 160M. (253M adults, 65% disapprove.) 200k more would be mere rounding error. And, as you point out, they can’t vote anyway.
That’s certainly the most important thing he could have done on his own. The Federal Government, however, could have done much more. And many other countries around the world demonstrate examples. (E.g., South Korea, Germany, Japan, etc.)
@danny, the odds of DC and Hawaii being undecided are actually even lower than the odds of Wyoming voting for Biden. This 495 vote scenario seems more realistic within the realm of extremely unlikely but, who knows: