Not lazy; but definitely cheap. I don’t know why they a doing this. It has been tried many, many times over the years by various manufacturers and the public always hates it. And on a luxury brand? No. Just say no.
Maybe....but lots of benefits from doing it this way. No physical mechanism moving to fail, liquid can't be spilled into the buttons, smaller space requirements means more freedom to locate them, cheaper to build and cheaper to repair, programmability for software functionality variations since no physical movement. I don't think it's because Volvo got "lazy".