Nothing is foolproof!
So your solution is just give up and go to war!
The Convention is a really bad idea. Look at the NFL as an example.....the players and team ownership that used to be patriotic have been bullied into submission by the forces that seek to destroy the nation. And look at the incredible numbers of pols who campaign conservative then when in power implement the globalist agenda.
A convention to change the Constitution we're trying to preserve? Too much downside risk.