Vista Users may still want their OS to connect and browse. Vista Users in the know converge and unite. I still have a Vista unit in service here at home and it is mainly used because of an active e-mail account...and I haven't taken the time to transfer the e-mail over to linux mint + thunderbird.
I do have Palemoon 27 loaded on it and Firefox 52 i think. with the obligatory NoScript and Ublock. I did notice that the newer versions of Palemoon are canceling Noscript from their add-on provisions. Actually, i think new versions of PaleMoon don't link over to firefox add-ons anymore.