Exactly. Even if you have smaller outlines, they are still obscure (will tell more below).
Also I think Dolphin could perfectly made convergent for phones without a big UI change, but those outlines become a big burden for touch input. Speaking about experience with Nautilus. I don’t know if KDE will ever become convergent, but with the current overall app-design it would be a wasted opportunity. Just as a little offtopic hint.
I know, it is just hard to me to see a single solution where both parties are happy with.
Well, good point. The difference is, that other elements are more like 1-click-buttons similar to start-menus and less like an organization tool for files and folders. As button-design it is really fine. But file-manager are a tool I heavily work with, sometimes with 10 open tabs/windows, sometimes moving single files and folders around, sometimes whole batches creating temp-backups, reorganize, manage local git patches and so on. I do not just copy one or two times a year my holiday pictures where a less optimized file-manager is valid.
I know file-manager are not only for “power-users”, but also not only for the person that only uses it few times a year. It should work for everyone.
First, this is a key point of my critics. The area is obscure, not visible until hover. I usually click while moving (not super precise, especially with high mouse DPI that I require for large screens). But I have to stop it now, looking that I do not accidentally click on the border, because otherwise I move the item around. Old hitboxes had the size of icons and labels, perfectly predictable.
Second, there is less space to click on the fly. Even if the border would be visible all the time (not obscure any longer), it has much less space to click. When clicking on an item to open it, I slow down my mouse anyway for double-click and because my target is done when it open the item. But when selecting I accelerate my mouse. Before I realize that I grabbed an item and drag it around, the cursor is on the other side of the screen. Luckily Dolphin opens a dialogue “copy/move/link” and so I can stop that action (in Nautilus I often moved an item into a folder etc).
I do not care for all these things on other implementations as Folder-View-Widget, which is basically an *.desktop starter attached to desktop panels to me. Would I use it as file-manager, I would criticize the same (but makes not much sense to me to use it this way). I hope I could explain the difference well enough.