Earlier quoted context omitted.
Is "I request every one of my followers to make 20 spam PRs so at least 4 sit for more than a week" The same translation of: "Send PR to repo with little activity, it'll increase the chances that it'll sit for 7 days. The lesser known a repo is the better, 4 out 20 is doable" It is times like this that a third translation would be nice, preferable with a bit more context around the "4 out 20" quote.
It's also bad from Hacktoberfest that they reward unmerged PRs. It would be better if they only rewarded PRs that are actually accepted or at least do something meaningful.
Or just direct newbies to a bunch of volunteer/sample repos dedicated to helping newbies learn the system, and maybe offer a competitive higher tier of prizes for PRs nominated by repo owned and chosen by DO.