Composite was optimal for a whole host of systems.
NES, PCE, Sega, Super NES, Sega again, PSX, N64.
Arguably even Dreamcast.
Dithering being blended, free AA, MvC2 being less incongruent…composite was sharp and saturated on brand new CRTs that were being cranked out of factories left and right. Center even. Stage right. Stage left even!
Who wants the checkerboard overlay of S-video when you can have clarity and pop of composite?
Once PS2/Xbox/GameCube get here it’s component all day. Especially given the rise of progressive CRTs. But on interlaced sets, it’s not like you’re kneecapping yourself to use composite there either.
Comb filters and various other improvements froze dot crawl in place and prevented flickering artifacts.
Composite felt like a huge upgrade over RF switches and spade lugs.
The Genesis 2 and 32X even removed the rainbows from the waterfalls.