I disagree with you. Spell Check may make people a little lazy or careless, but it doesn't make them "stupid". Spelling is no worse than it has ever been. People still make mostly the same mistakes that people always made. Just because people are careless about spelling doesn't mean that they can't spell. English spelling is very difficult for many people because it often is not phonetic and doesn't make sense.
You may find this poem entertaining.
When the English tongue we speak
Why is break not rhymed with freak?
Will you tell me why it’s true
We say sew, but likewise few?
And the maker of a verse,
Cannot rhyme his horse with worse?
Beard is not the same as heard,
Cord is different from word,
Cow is cow, but low is low,
Shoe is never rhymed with foe.
Think of hose and dose and lose,
And think of goose and yet of choose,
Think of comb and tomb and bomb,
Doll and roll and home and some.
And since pay is rhymed with say,
Why not paid with said I pray?
Think of blood and food and good;
Mould is not pronounced like could.
Wherefore done, but gone and lone -
Is there any reason known?
To sum up all, it seems to me
Sounds and letters don’t agree.
Best of luck.