"There are literally thousands of altcoins out there that were created by copying the Bitcoin idea and even the original source code.  And you say that it cannot be copied?"

You cannot copy bitcoin, that's the reason why altcoins based on pow will all fail, bitcoin is proof of work itself. Proof of work means resistance against replicability itself


"On the other hand, it kinda makes sense that Bitcoin can't be reverse engineered. I mean, how in the world can you reverse engineer something that everybody knows the coding for any time that we want? Can't be done."

yes it can't be done, bitcoin is the only product made by mankind that cant be reverse engineered or copied