However, I commend you all to take some time and watch how this man made a physical bitcoin with gold and it looks exactly like Bitcoin.
The latter part is quite confusing for me...
Question is will the physical bitcoin worth the same rate like the online Bitcoin? or another design?
As others have mentioned, there's no such thing as a physical Bitcoin, but the different Bitcoin-related collectible coins you're referring to will always have a different value
[each design has its unique value as well].
In
physical bitcoin, the private keys are simply embedded into physical objects. A physical bitcoin without this embedding is
useless.
It's worth noting that some people buy/sell unfunded collectible coins!
(someone created that physical item and funded it, so it is somewhat centralized)
You have a point, but we can mitigate this problem by purchasing from manufacturers that sell unfunded DIY collectible coins.