Linux has its own weird implicit copy paste on the mouse - pressing the wheel pastes the last thing you selected.
It depends though - if you’re copy pasting between programs, you’re probably using your mouse already, so it’s good that the buttons are there. But if you’re writing or editing text, you probably have your hands on the keyboard, so you need the shortcut there as well.
Linux has its own weird implicit copy paste on the mouse - pressing the wheel pastes the last thing you selected.
It depends though - if you’re copy pasting between programs, you’re probably using your mouse already, so it’s good that the buttons are there. But if you’re writing or editing text, you probably have your hands on the keyboard, so you need the shortcut there as well.