Biker, it's up to the guy himself really, I totally agree with you that 720p is dead and gone and 1080p is a big improvement, but depending on his usage, if the TV is good enough for what he wants it for, and it works then it's worth keeping!
What I never understood is a lot of modern TVs referred to as 720p (HD Ready) weren't 1280*720, but 1366*768, maybe they thought "it's close enough..." lol