Well, it's just correct in English (https://dictionary.cambridge.org/pl/grammar/british-grammar/except-or-except-for) - but I guess using just "except" in the main English answer would be simpler and more direct, changed now.
The phrase "Except vegetables" doesn't make sense on its own, unless it's part of a sentence such as 'Fruit is great, except vegetables'. So, you would need to include something else (e.g. some fruit) to 'compare to' in that kind of sentence. 'Except' means not to include something. Now, if 'Accept vegetables' was written then that would make sense, as 'accept' is to agree or to validate something. Both 'accept' and 'except' sound similar, but they are significantly different.