No dude you're wrong but you're being stubborn about it. The average person is not too tech savvy and telling them that flat panel TVs have a lot of motion blur is something they can easily understand. Please you're being stubborn just accept that you're wrong on this one.
I mean you don't know if that's so easy for the average person to understand either.
if you tell a non-tech savvy person that a TV has a lot of motion blur I bet many will then ask back what that means, just like people would if you told them it has persistence blur.
because what does the average joe know about motion blur or what that means in practice? Motion blur is not a term that anyone outside of tech savvy people and/or gamers or film nerds really ever think or talk about.
the only way you can rightfully claim that motion blur is easier to understand than persistence blur is if you tested it in the field at an electronics store. you switch from using Motion Blur to Persistence Blur every other customer and then write down how often each one asked back what that is.
and then after like 100 or if you wanna be more precise maybe 1000 customers you see which one was asked back for clarification more