It is a stupid idea that a tablet and a PC should have the exact same OS and interface.
It’s not really exactly the same. I think it’s a good idea to make your products have a familiar feel across platforms. Xbox 1, phones, tablets, and desktop. I don’t think they need to be identical and they aren’t especially for the first 2. But a common interface isn’t a bad idea at all.
Touch screen laptops really help and I hope those become much more common by the end of this year.