I am suspect of this being true because GDP is measured in several ways, and you can measure the contribution of tech companies through their salaries and profi

I am suspect of this being true because GDP is measured in several ways, and you can measure the contribution of tech companies through their salaries and profits or through their expenditures and sales to ads. (i.e. their contribution to GDPcan be measured in their revenue) But this is also a red-herring, its at most an accounting issue, not a real economy issue.