In this superb answer, @Ulrike Fischer gives an answer how to deactivate hyperref and keep the bookmarks bar working. MWE is there in the answer.
I, however, want to keep hyperrefs working in the table of contents (but not after that). Any neat solution?
Using the environment \begin{NoHyper}…\end{NoHyper} (after the toc) doesn’t work in the same way (besides it’s not good use for a document of 500 pages to put it into this environment; and \AtBeginDocument{\NoHyper} is no possible solution, since the toc should have enabled links).

pdfmanagement-testphase, at least not directly. If I encounter interference with another package, I will write you. For now, it is really great! – hh93 Mar 16 '21 at 17:03