Exatcly they dont know shit. While american healthcare system is clearly fucked there are many problems in european healthcare ( very country dependent tho ) ranging from lack of qualified doctors and long waiting times to very expensive treatments not covered in eu for some reason ( the one ive seen the most being uber expensive often experimental treatment where you usualy have to go to america ).
Thats the problem with internet you never really know what is allowed where. Doubly so in places like lemmy or reddit where rules depend on community