You have missed what i said.
It is not that the numbers do not exist, it is that they have no meaning.
But we do use them all the time and the hypothesis of 1+1 = 2 proves itself to be correct . Always. forever.

Everything that has exists has meaning.
The fact you can write them down, shows they exist (even as a concept).
If they have no meaning , then to ever use them would be meaningless.
You are arguing against mathematics - by using mathematics..!!
You use mathematics every day - and trust it - the correct change from buying product at a shop....
If number have no meaning, it would make no difference what change you received back.
Arguing against a reality (provable results from an hypothesis) - and then using those established realities to function successfully is paradoxical beyond belief.

A postmodernist contradiction, maybe?

1 + 1 does not equal 2 is postmodernist theory. Everything is subjective.
If you believe everything is subjective, that is post modernist theory.
( and provably incorrect).

Clean your head, matey.