Multicom makes good sense for flights B050. ATC/Flight Service etc MUST monitor this frequency in case of PAN/mayday calls.
Whoa! That comment manifests a breathtaking level of naivety.
In the interests of promoting timely assistance to those in distress: ATC/Flight Service do not monitor 126.7 or 121.5 and I can’t see that happening any time soon.
The Area frequency is helpful if you need assistance. Set off your PLB or ELT too and it will make noises on 121.5.