Actually I love salt, tbh. Which isn't good since I suffer from chronic dehydration.
However onions, whether cooked, diced, grilled or whatever, are still awful, no matter what they are put in.
The ONLY way I can tolerate onion in any form is onion powder used in small amounts.
I am basically a supertaster as far as I am aware. To let you know how sensitive my taste is, one time at work I made a taco and all I put on it was tomato, lettuce and cheese. I took a bite out of it, turned to my coworker and said, "You cut the onions before you cut the tomatoes today, didn't you?" and he looked at me strangely and said yes.
I knew this because I could taste the onion residue left over on the knife that was transferred to the tomato.