I'm not remotely emetophobic and never have been, and I completely agree, OP.
You don't have to be emetophobic to find vomit disgusting — it's normal and natural. It can also be a perfectly normal, healthy psychological reaction to feel sick when you see and hear someone else puking.
But every couple of weeks or so, I'll be watching something on TV, and without warning there's retchy, chunky, splashy sounds of vomiting, puke-splattered surfaces, wiping of spew-speckled mouths, or occasionally, if you're really lucky, a whole simulated on-screen vom. I'm not a fan.
To me, it's not much different to being sat down watching some drama, and suddenly I'm getting the full aural experience of someone else having a shit, complete with farty bubble sounds and plopping of lumps into water and maybe a bit of sloppy toilet-bowl pebbledash, accompanied by the odd grunt or groan, and with a glistening close-up anus-wipe to finish. Maybe even some simulated shit.
Except it's worse than shit in some ways, because while shit is disgusting, seeing someone else shit doesn't usually induce physical feelings of needing a shit (or nausea), whereas someone else throwing up is a common and entirely normal trigger for nausea.
It's only the absolute grossest of gross-out comedy, the kind where you know exactly what you're getting into, or the very grittiest of gritty 'orrible dramas, that will have that level of portrayal of someone shitting, or having a particularly bad time while shitting. There are ways of showing it without showing it, if you need to show that someone's doing/done that, and the media seems to have decided that's generally the way to go, with shit. The consensus seems to be that unlike maybe sex, violence, nudity, or swearing, there's not really much appetite for loosened boundaries or more explicit portrayal of shitting, except in the very limited types of circumstances I mentioned.
But vomit is apparently something we need to see and/or hear in plenty of detail 
I'm not scared of vomit or vomiting, and most of the time a TV puke won't actually make me feel queasy, but it's not exactly nice. Especially if you're eating your dinner. And it's hardly ever adding anything significant to the experience.