Health-
On e/o else including other women the Biur Halacha says -“it became a Taanis Chova”.
I don’t think that’s much of an argument. These segments do not need to hold like that.
you can’t say there is a Minhag for certain segments not to fast except for pregnant and nursing, unless you find Achronim whom argue on the S’A and then you can be Someach on them.
Not true. You absolutely cannot call it a minhag shtus if l’maiseh they are clearly following the ruling of the Gemara, regardless if it accords with the Shulchan Aruch; al zeh amru minhag mevatel halacha as Sam is tayna-ing.