I was seeing pinboard.io just yesterday. I save my bookmarks in DevonThink using the full webpage stored in the computer. I now want to move completely to Linu

I was seeing pinboard.io just yesterday. I save my bookmarks in DevonThink using the full webpage stored in the computer. I now want to move completely to Linux but DevonThink is MacOS only and I was searching for something like DevonThink on Linux. Nothing came up so the next best thing seems to be pinboard.io... but the truth is, unless I pay the premium service for archival (and then continue paying that without stoping every year to keep them archived and rely in a private service that can just be terminated at any moment by its developer) I really don't see any diference between using pinboard.io or using Firefox bookmarks. Am I missing something here?