Always_Ask_Questions:
His party platform is only part of the issue. You didn’t consider that every Zionist (and party) has signed on to the Zionist “Jerusalem Program”, which is heretical and idolatrous Zionism.
The “definition” of Zionism is not an issue. Also, anything that removes Hashem from the equation is, of course, beyond the pale and not a “hashkafa” dispute. But that’s almost besides the point.