It's just the time Ron Carter came up in, Stanley didn't really start playing electric until the second or third RTF album, all his early stuff with CTI etc. was on upright. As years went by younger and younger cats were brought up to kill on both electric and upright, it's normal now to have monsters like McBride, Patitucci who do both, it wasn't always like that.
Just like Quincy Jones and other cats from a different era, I give Carter a pass, props and tons of respect for such a huge body of great work.
Me too.