[xyzelement]

Yes look if they have one quick connectivity hick-up or things genuinely go badly in a one-off way, there's ways to handle that (eg reschedule.)

But if people have consistently shitty wifi and they don't bother to mitigate that even for an interview, that's a different story. A professional understands that success takes some prep - and if you have one hour to convey to someone that you're qualified for a job you want, but you don't line up basic things like good connectivity -- it's the same as not bothering to find a clean shirt to wear to a real interview.