Hadn't really finished my Obsidian comments:
Despite being very keen for the mobile apps, I find that I haven't used them at all. I use the vaults, but I haven't used Obsidian to do it when I'm on mobile.
I think most users who don't need WYSIWYG (like me) will reduce their friction level by avoiding it and sticking to legacy editor. The new editor is a requirement for some plugins to work on mobile, but has substantially increased noise and friction. There are bugs, and some iffy design decisions, some from CM6, some from Obsidian. I personally encountered a short-lived one when insider Obsidian was updated to Electron 17 (quickly pulled because it was buggy). And the noise from plugins not working, changed ways of working doesn't seem to have reduced yet. I substantially switched to LP (more future proofed), but not for important workflow areas. But the noise from it all on forum and Discord is overwhelming.
I'm still attached to my OPML & md system. The plaintext large md files, should be accessible by a large number of programs well into the future; and their structure, and links are embedded within. But I've stopped regarding the md version as the day-to-day canonical version. Sometimes they might be, but only when I have good reasons for using them rather than an outliner. The one area where the markdown file will have it is in areas requiring privacy and security that I won't put on line.
Which leaves me with a docx unknown. Most files sent to me are in docx or PDF formats. Most of my destinations are happiest with docx and PDF. I like using colour when editing. Using HTML in markdown has always been a bodge from design onwards. The whole review, comment and version change system in Word etc is infinitely better than anything I have seen anywhere in markdown. Which leaves me thinking that markdown is maybe fine for notes, but simply not functional enough for actual documents in progress. And Obsidian's insistence on .md rather than .txt gives it a very low place in the interoperable league. Makes me feel a bit heretical since I have disliked word processors for a very long time.