Well no one way is correct and one way is not, regardless of what this particularly shitty Wikipedia article says.

The comparative less is used with both countable and uncountable nouns in some informal discourse environments and in most dialects of English.[citation needed] In other informal discourse however, the use of fewer could be considered natural.

“in some informal discourse environments?” Does that mean environments in which writing goes unedited and mistakes don’t matter?

Just because some people somewhere do a thing doesn’t mean it’s right. To people with formal writing experience, or people that are just well read, the agreement errors are obvious and revealing.

This is a question of diction not style. Check the dictionary. Less and fewer have different meanings. One of them affirmatively describes something uncountable.