I think in the US there is far too much unionization, and so companies are trying to instead use british voice actors to get away from them.
Dude you really need to learn how to Google before drawing a conclusion on social issues. Otherwise it'll just read as senseless rants.
A quick Google shows that in 2023:
22.4% of UK employees are in trade unions.
10% of the US workers are members of labor unions.
About
30% of the workers in Canada belongs to unions.
16.3% of employee in Japan were unionized.
I can't find 2023 data for south Korea but the 2022 data says it's
13.1% in 2022.
In other words, US has lower percentage of unions than some other western countries
and it is lower than East Asia which is known to have worse working culture.
So....what do you mean by "far too much unionization" exactly? What should be the "right" amount of unionization in an economy?