"Copying a file across your own personal devices is still painful." No. I have never had an issue with Dropbox or Discord for simple file sharing. For encrypt

"Copying a file across your own personal devices is still painful." No. I have never had an issue with Dropbox or Discord for simple file sharing. For encryption I use Mega with Signal for key sharing. MegaSync is fantastic for files you want to sync between everything and has builds for all the popular distros. The fact that he doesn't list Mega is worrying to say the least. He's a nuDev creating a solution in search of a problem.