It’s hard to tell sometimes. Especially when it’s such a sensitive issue where normies will parrot the same ignorant crap over and over again. I one went off on someone, not even considering it was in-jest, because is was so convincingly written.
The /s is important people. I know it slightly reduces the impact of the joke but some people believe that shit 110%.
That’s not a dodgy HDMI cable. One of the devices, if multiple are connected together, is causing the mains electricity to be capacitively transferred across the transformer core in the power supply.
That’s a dodgy power supply design because of either a cheap core design, poorly rated decoupling caps across the HV to LV side of the core or lack of earth pin.