General Discussion

Most of the rest of York county? Yes. But not York City. Based on the 2020 census, York is a majority minority city with the largest demographic being Hispanic or Latino.

Race …....... Number …....... Percent
White …....... 16,889 …....... 37.70%
Black or African American …....... 11,606 …....... 25.90%
American Indian and Alaska Native …....... 293 …....... 0.70%
Asian …....... 426 …....... 1.00%
Native Hawaiian and Other Pacific Islander …....... 34 …....... 0.10%
Some other race …....... 9,531 …....... 21.30%
Two or more races …....... 6,021 …....... 13.40%
Hispanic or Latino (of any race) …....... 17,076 …....... 38.10%

https://en.wikipedia.org/wiki/York,_Pennsylvania

Besides, the people refusing to wear the jerseys are not from the local area. There are only 4 players on the team from the entire state of Pennsylvania. Pitcher Aaron Holiday from Philadelphia, Pitcher Chris Vallimont from Erie, Infielder Nick Dunn from Sunbury, and Pitcher Joely Rodriguez originally from the Dominican Republic, currently living in Bernville.

https://yorkrevolution.com/revs-roster/

The local people - the owners or front office of the team denounced the players.