For what it's worth, I do feel like text editing is a big problem on Mobile. This is why I got myself a samsung note-line phone, the stylus greatly improves the text editing experience by basically being about as precise as a cursor and having a second button.

I still wish text editing was better, I like taking notes on things usually on Obsidian and the entire mobile text writing and more importantly editing is just not too great, but as the demo shows it can be improved a lot... :/