Interestingly, Scotch Ian (remember you’ve been doxxed before you get too frisky), it’s the Japanese who have a problem with r.
Which has hilariously led to a nationwide chain of soapy tit wank establishments called ‘Soapland’ (in English) being transliterated as ソープランド (“sopu-rand-oh”) in the local lingo.
The Chinese have no problem with l or r, both sounds appear frequently in Chinese.