You can always say "it's not because of LLMs", that's nearly unfalsifiable.
But if all of your peers are saying LLMs are more productive, if you're building things faster than ever before, the macro picture speaks for itself.
It sounds like this has a pretty falsifiable claim here - is the revenue attributed to a tax thing? Then it's clearly not attributable to code.
I agree that the macro picture would speak for itself. Can you point to any macro level detail that is indeed cleanly showing benefits from increased productivity from LLMs?
I'm not asking to say "it's not because of LLMs" I am asking for evidence that LLMs are creating revenue for users.