Drew-r I'm using a PC. But I think I'm using rich text editor mode, not Markdown.
Regarding iPadOS. I still use iPadOS 13.7 and have ignored versions 14 and 15, as the flaws there for me were outweighed by some new handy features. The same goes for my main iPad app, forScore. I am still, for the third year, using version 11.2.5, as there are a number of things in versions 12 and 13 that I don't like. I wrote about it on Reddit in a pretty detailed post with pictures.
I'm very happy that I mastered the almost hacker method that allows me to download from hidden sections of App Store any previous version of any app (I haven't done that even on Android, I've been using both systems for years). That way, even if I move to a new iPad, I can install my good old tried-and-true version of the app. Oh, and there are still some apps that I, like many users, once greatly regretted updating. And now, I am happy that I can download .ipa files of previous versions, install them again, and enjoy the familiar convenience.
Now many people are hoping for iPadOS 16 (at least for the Pro versions of the tablet), which will be unveiled on June 6. As much criticism as Apple received after the presentation of iPadOS 15, they have probably never received for any of their operating systems. I am much less interested in iOS 16 (as well as the new boring versions of Android) because I have practically stopped using smartphones in recent years.