For me it is much worse that that. Without these buttons it is impossible to edit your typing in any meaningful way. AS is often the case with upgrades I could see nothing of value but this big negative so I have gone back to the previous version. 5 hours of effort!
Also
1) nowhere do they tell you they have deleted these buttons
2) I talked with Apple support and they were unable to edit the text with the buttons removed or show me how to do it
3) It is not as if the space is used for anything else
4) Even then the keyboard depends on the programme you are using so you don't even have a consistent keyboard.
I just find the whole thing abysmal -- then maybe it is just me...