“Beards” are being allowed only to appease the muzzies. Yes, there have been beards allowed in the Navy but they are rare (submariners yes).
I guess you did not read the article. Mr. Williamson was talking about Sikhs, not Muslims. Sikhs being a sect that’s reason to exist is to fight Muslims. It is what they do. They are a warrior race. It is pointed out that the military of Jack Pershing had no problem allowing Sikhs keep their beards and turbins. Ask the Japanese how it felt fighting against beards and turbins at Imphal and Kohima.