I totally agree with @Stravaig and @fellrunner85
I'd be put off dating someone with a lot of food dislikes for many reasons -
Healthy ageing is a priority for me and I'd simply be incompatible with someone who doesn't make healthy choices. That includes eating a varied and nutritious diet most of the time. Sure, if I could live healthily on junk food and booze that would be fantastic, but I wouldn't be able to so I make sure I eat veg etc.
Disliking all veg apart from peas and sweetcorn would mean being unable to cook 80% of the recipes I currently do (where it's not easy to pick the veg out) and having to massively rethink what I could cook for him. What a PITA
Aside from food intolerances, medical conditions, and ASD etc, being a "fussy eater" conjures up images of fussy toddlers. Not sexy and not what I'd want in a relationship.
I like eating out, and from experience have found that the options are limited when trying to cater for a fussy eater. Hell, even having a vegetarian in a group for example means discounting restaurants that don't have a good choice of vegetarian food, and vegetarianism isn't exactly rare. Depending on where you live, options might already be limited.
If he was a great shag and wanted a fuck buddy then fine, but I wouldn't be interested in anything more than that. Relationships are supposed to enhance our lives, and a fussy eater would make things harder and less enjoyable for me, so I'd rather be single.