That was partly down to the US Army running a propaganda campaign during the war that the MG42 was not a good weapon and was not very effective. Then they did some tests with a copy of the MG42 in 30-06 which was especially badly nailed together which contributed to the view that the weapon was terrible.
I think the option of retaining the BAR depends on what other weapon they substituted instead, if it was a M1919A6 or one of the appalling trials MG's the US was playing with post war I would probably have gone for the BAR too.
I think the option of retaining the BAR depends on what other weapon they substituted instead, if it was a M1919A6 or one of the appalling trials MG's the US was playing with post war I would probably have gone for the BAR too.