if you create good post (not AI garbage) and connect it to google search console, you should be able to index it. use the index URL option in search console.
remember, this web 2.0 will NOT having a direct link to your money site. it is used to index your other links.
i dont know if i musunderstood what you said, but this is what i did, because in google search console you can only submit a page from your own site, not another site.
built page (my money site)
amazon.com/anotherpage
put 3 contextual links to 3 web 2.0 pages on 3 different domains. - link to "page1"
on those 3 different web 2.0 domains, did some internal linking & linked all of the pages on each web 2.0
page1>page2>page3>page4>page5>page6>page7>
just before i started i checked on google site operator command & one of the web 2.0s had one page indexed, (when it didnt have any for months) so i think it might get some of the pages indexed , maybe not all but at least some of them.