This might be the first and only time in the history of food where the word fun is merged with the word onion. In general, I don't find onions to be fun at all, in fact I'd say that they're one of the saddest vegetables considering how many people cry over them. I'm also not a big fan of onions as a primary flavour in my snacks, so I’m personally sad when I see them on a salad. To me onions are a spice, and should be used as such. A pinch of dried onions, or a few cooked onions are fine used in moderation, but you'll never catch me eating onions on their own, and I cringe any time I see someone taking a bite out of one.
Fortunately for me, Funyuns don't really taste like onions, or at the very least don't taste strongly of onions. They really taste like onions and deep-fried crunchy rings. It's hard to describe the flavour of deep fried crunchy rings, it's almost like a strong flavour of nothing. There might be a hint of oil, but nothing that really makes these rings sing. I never thought I'd say this, but these could probably use a little more onion flavour, that or something that balances well with onions. Here in Canada, you can buy a similar snack, however the rings are less dense, and they're flavoured with both sour cream and onion. While I like the Funyuns texture more, the flavour of the Canadian rings is much better.
Funyuns are a classic American snack, so it's not likely that they're going to change them any time soon. I guess if you grew up with these then they're probably OK. Having no history with them, I can't say that I'm a big fan, but it's not like they're disgusting either.