Reason im asking is because i want to copy my computer monitor onto a TV (going through a surgery coming up next year and am thinking i might be able to do basic stuff, like watching movies and such while lying in bed not looking to steal anything from my cable provider)
More about :high definition multimedia interface hdmi splitters
You will be fine with this product considering both the monitor and the television are HDCP (High-bandwidth Digital Content Protection)-compliant.
It should just filter the image to the devices and they will take care of the "handshaking" that is needed.
The reason this device exist is because it is a real-world scenario that people have (needing to mirror a display) and it doesn't infringe on or attempt to copy digital content. It is just mirroring it.