[Grammar] Is saying "very necessary" correct?

[Deviliscious]

Hi,

Someone wrote this:

"Lessons on cyber wellness are very necessary to young people."

I've seen instances where the phrase "very necessary" are used but in this case, it just sounds off to me. Is the sentence grammatically correct? If not, why is it alright to use it in some cases but not others?

 

[probus]

Some strict grammarians would argue that "necessary" is not an adjective that is comparable, i.e. there cannot be necessary, more necessary and most necessary. They would say that something is either necessary or not necessary. But in everyday colloquial English people tend to bend that rule; people say fuller and emptier, for example. People also say "more necessary." So in my opinion if "more necessary" is acceptable, so is "very necessary." If a vessel is full, we can still say that it is very full.