Congress can propose amendments but states have to approve.
If delegates to any Convention are politicians (elected or appointed), then anything they propose will be accepted by the states.
The only way the Convention works is if politicians are excluded. Then it will be tied up in the courts until no one can remember what was proposed.
Which is also the case with an Article V convention.
If delegates to any Convention are politicians (elected or appointed), then anything they propose will be accepted by the states.
Why? That doesn't follow logically. Congress critters are politicians, too. Not all amendments proposed by Congress are ratified by the states.