GSA and OPT IN PAGES works?

ok.

Regarding tools for tools to Disavow links, how can one tell to Google to ignore 90k links?

Expecially if new 90k links is being made every day?

It’s an example, not regarding that site i mentioned above: it was a test for gsa and i dont really care.

The question regards negative seo impact made by someone who let gsa as example run every day