The majority of the reason I still am using Apple platforms primarily is because of apps like DEVONthink, now you’ve got me dreaming of a Linux version.
For me, Markdown isn’t the issue, I’m a heavy Obsidian user at this point so all of my notes live there; DEVONthink is the perfect container for organizing and working with anything reference material related. I use Typora almost every day but I don’t think it’s a reasonable replacement for DEVONthink unless you are primarily using it as your PKM.