Easy answer : This Alt coin will be a copy of fiat currencies under full government control. Instead of money being printed from thin air, supply in this Alt coin will be managed by central banks. < They can change the supply at will, without ever having to have any type of consensus from the citizens >
Once these Alt coins are in place, pressure will be placed on Bitcoin users to stop using it. < strict regulations and laws >
Governments < let's say most > are chosen by their voters, so if you allow this to happen, you are part of the problem. Vote for a government that supports Bitcoin.
Yes I support this statement vote for government that supports bitcoin but which government do you think will support a decentralize cryptocurrency called bitcoin as they dont get tax if they support it.