Adult picky eaters are not a group of people who inspire a lot of sympathy in most people. While there are legitimate reasons for some who have a very restricted diet, being the guy who doesn't eat any vegetables is almost never a good look. It can also make living your life a lot more difficult than if you were more relaxed around food. Navigating things like restaurants, vacations, or being cooked for can be a real process.
This is something that was recently discussed on Twitter, after the girlfriend of a picky eater posted a video showing everything her partner brought with him to eat and drink on their two-week-long inclusive holiday. Involving a large amount of chips and instant noodles, it's fair to say that viewers were not impressed by the palate on display. Truly, living like that cannot be plain sailing for anybody who has to deal with it.