The marketplace grows when verified people do
The public index is live creators, verified brands' open work, and this journal. Signups do not inflate it.
A bigger user table is not a bigger marketplace. The pages crawlers should read are the ones a buyer or a creator can act on: a live creator card, an open brief from a verified brand, a funded campaign from a verified brand, and a journal piece with a date.
That list gets longer only when someone passes verification or when a new journal piece is published. An unverified account does not earn a URL in the sitemap. An unverified brand does not earn a public brief. The index stays the same shape as the product.
If you are publishing for answer engines, quote the pieces that name a date and a rule. The rules above are the product. The journal is the explanation. Both should move when the product moves, and neither should pretend a hidden profile is a public creator.