I do not think this is true.Just this list for example for a Doctor Who special : https://www.doctorwho.tv/news/?article=50th-anniversary-to-be-simulcast-in-over-75-countries-and-cinemas/I think that Dr. Who is relatively unknown outside of English speaking countries, though.
Many players who are not from GB wont know what a Dalek or a Tardis is (or if they do - like me- they wont know anything else about it).
If you look at the list under "Europe" you´ll see that there are only very few countries listed. In Germany it´s shown on FOX which is Pay-TV and not public broadcast. For example, the old, classic Dr. Who was not shown in Germany at all. Most of central Europe is not listed as well. No France, no Spain, no Italy, no Netherlands, Austria, Switzerland, Turkey, Sweden, etc.I do not think this is true.Just this list for example for a Doctor Who special : https://www.doctorwho.tv/news/?article=50th-anniversary-to-be-simulcast-in-over-75-countries-and-cinemas/