There is absolutely no reason not to enlarge from uncoated lenses. was shot with an uncoated lens (zeiss Doppel-Amatar 150mm), so was (Angulon 210mm), (WA Rectilinear 3 1/4") and (Heliar 150mm).

I can assure you that all of these hold up very well under enlarging - and one of them is a crop of less than 1/4 of the film area.