The hispanic swing does seem a bit too small in this data. That said, I have read a couple of articles now that have reported that the nationwide swing is fairly negligible, but it's specific areas where the hispanic vote dramatically shifted towards Trump.
There was a noticeable swing in California towards Biden with, where he improved his margin among Latinos over Hillary's by nearly double digits. Considering that California is home to about 1/3 of America's Hispanic population. That offsets a lot of the losses in the rest of the country.
Biden did not improve his margin in CA by double digits among Hispanics vs Hillary, how did Los Angeles County swing towards Trump if there was a double digit Hispanic swing to Biden.