Yes, but not doing a numerical work is perfectly fine use of a PC.
Edit: thinking more about it, I’d rather use a solar cell powered ble enabled calculator with all the usual buttons (M*, +-, C/AC, <, etc) and a screen, rather than having a built-in or separate numpad which sucks for one-hand input anyway.
My reason for using a no-keypad keyboard on the desktop is entirely functional: reaching for the mouse (a very common motion) is faster.
And as a bonus, I can type numbers faster on the top row than I could on a keypad since I'm using 8 fingers, and my hands stay in home position for mixing with letters and other symbols. Combine that with being easily able to switch to a laptop keyboard and still type at full speed -- I've just never seen the point of a keypad.
Makes me wonder if with practice I could switch from numpad to the number row for numbers. Currently my brain doesn't work like that, but I had to learn how to type letters all those years ago, so it has to be the same. But I have to "unlearn" how I currently type numbers.
I doubt these folks do any meaningful numerical work, so they do not understand the convenience of the numpad.