This kind of answer is also expected when people don't really know how computers are used.It handles simple office tasks great.
Because it's rendering, running benchmarks, gaming - then a big gap of "no idea why these CPUs exist" - and finally "simple office tasks" that can be run on a 9 year old PC.
I've done some Excel tools that run for a few minutes on pretty fast 4-core i7 desktops. I wonder in which of your categories would they land.
But you're not acquainted with computers well enough to understand why adding the second core made Windows and single-core programs more responsive...I'm old enough to remember when we got dual core CPU's, and that made a remarkable difference in responsiveness in normal Windows usage despite basically all applications where single threaded.