Would the bachelor's degree major matter if you get a masters in the best field?

“The experience of one blogger with a professional terminal masters program should not be the basis on which you base your major.”
exactly!
BTW, My DS is at Caltech getting his PhD in Geophysics.
and there is NO WAY he would have even been considered for any Masters program without a BS , great GRE’s great LOR’s, and a high GPA in his major - Geology.
OP -Trust the people on this website. We know what we are talking about.