I have a PlayStation Edition Backbone One I use on my Galaxy S23 Ultra. I have been on and off the game because of no button hints within the game itself that the PC version has. Yes, most use the touchscreen on mobile, but I want to play it via my controller, and with no button UI hints to help, it's hard to play the game, and I have to resort to using the touch screen, which believe it or not, ever since I got the Backbone One, using the touch screen is no longer ideal for me. Most may see this as a non-issue for most, but it is an issue for me. And if I want to play the game via Samsung DeX on my TV, button hints on the UI are a must, otherwise I find the game unplayable.
I'm sure some others would agree, and having button UI hints on the mobile versions would be nice to have, especially for those that want to utilise their controllers more on mobile, now that mobile gaming is really picking up steam in this day and age.