Your export file will include links (URLs) of your saved items. The export does not extract the text of saved links. Additionally, the export does contain tags or highlights.
Reminds me of the first episode of Devs ( https://www.imdb.com/title/tt8134186/ ) where an artificial intelligence engineer does a demo about syncing, and then predicting the future movements of a nematode worm.
Great show by the way!
There is much more than "two commonly deployed used" of MPTCP, to name a few : OpenMPTCPRouter is an improved fork from OVH Overthebox project ( https://www.ovhtelecom.fr/overthebox/ ), Tessares is a company that provide key in hand MPTCP solutions for many ISPs ( https://www.tessares.net/customers ).
MPTCP was designed to be transparent for the end user, so you might be using it without knowing it, from your phone, your computer or your internet box
https://docs.kernel.org/admin-guide/kernel-parameters.html