A carer who speaks the same language to a high standard is absolutely essential, and in this country it's English.
I have had to put up with carers who spoke virtually no English, made no effort to understand me and I certain couldn't understand them. Bloody nightmare. Used up the tiny bit of health / energy/ pain free movement I had trying to make my needs understood, and failing.
When someone is very ill they have such limited resources that it (for me) was literally a choice between a. Using up everything I had to communicate and then get maybe 0.5/10 needs met, and be in agony, or b. give up and not eat/ drink/ wash/ have medication that day but not make self iller. I did B most days and at one point, hadnt washed my hair for 4 sodding months. it was awful and I can see how people could easily die with 'care' like that in the name of equal opportunities etc.
So actually, i think you are being grossly simplistic and choosing to pursue your agenda above the basic needs and health and safety of the most vulnerable people in society. Disgusting.