Seems unlikely, but looking at current mortality trends the world's first 150 year old human has already been born. Scary stuff, in a world where many people still expect a great retirement by saving peanuts, working for 40 years and retiring at 65 years old.
I still do not see many active over 100 year old people.
There is a limit to how well a human can work, now if lifespan does hit a pitential 150, the last fifty years will be servo assisted, plugged in, monitored by medical apps, and being pumped full of whatever is required.
Still there is a limit to how much work one can do, unless pensions eventually become fifty percent products that turn into medical insurance trusts, I fail to see how anyone can be supported in a capitalist society without state or child funding.
There is a fair mess to be untangled and sorted over time.
Now to reiterate, this chap is a fraud, might be his grandparent, best of it is, he might not even realise if he has the same name and a bit of demetia.