Yea, their line of thinking is "using Office 365, web browsing, and emails" just like you would with a regular laptop in a generic user fashion.
A laptop has a robust motherboard to support the CPU and is essentially a desktop that fits in your lap. These tablets have a motherboard that is about one third the size of the housing and built for "function". The cooling system and heat sink for these
is not good enough for running high end software. You see, when a CPU also doubles as a video card, you have two major processes going on at the same time in the same location. That generates enough heat to cook a chicken. A laptop has a robust heat sink
to go along with a CPU fan to get rid of the heat in short order to prevent overheating. As you can see, these Pro 3 tablets overheat pretty easy when graphic intense software is used and sometimes they do that when just sitting idle. It is unknown why it
does the later.
So, YES! You can use it as a laptop if you keep things simple.
If you keep a machine in the perspective that it was built for, you will have no problem. These are tablets and should be treated as such. They do not have the robust components to support the desktop class CPU that they have.
That is a shame but in the near future, that will change and you will have a desktop class system that will be about as flat as an iPad Air 2 (and I am talking about x86 based Windows machines and not that flakey flower pot iPad). Those are just a few years
away and should run every program out there and run cool at that.