There are three things to take into consideration when feeding raw pork:
It's not a concern for two reasons:
Trichinellosis is eradicated in most European countries and in the USA. (In Germany, for example, it's common for humans to eat raw pork)
Cats won't show any symptoms, meaning it's not harmful to them. Source
Aujezky's disease also called pseudorabies
It's much less known but much more a concern. It's less know as it's not transmissible to human and much more a concern because it's fatal to cats. Source
Fortunately, now domestic pigs are free from it and regularly tested in Europe and the US. Though it's safer to not feed free-range pigs, and don't feed wild boar.
It's important that you check the epidemiology in your country before feeding raw pork.
Finally, pork meat alone isn't a balanced diet. If you want to keep feeding, look for a prey model diet, which is a way to balance a meat-based raw diet.
So if your country is free from Aujezky's disease and you provide a balanced diet you can feed raw pork.