This is hyperbolic. If the anti-Trump movement starts placing Trump in the same basket as every other tin pot dictator and talks about their country as a failed state, the broader public is not going to take anything rational they say seriously. Provisional leadership - to take over after Trump has somehow been overthrown, I guess? Yeah, that sounds democratic. Your country has mechanisms for succession built into the constitution, specifically to avoid ever having a power vaccuum.
I think it's a travesty, it's selfish and greedy, but Trump is within his rights to do this for the time being (though there will surely be legal attempts to block this EO). From a purely political standpoint, it makes sense. Trump needs to shore up support among the Republican base ahead of next year's midterms, which the Republicans are on a crash course toward losing right now. As @winkybber posted earlier, this was expected, particularly given Republican dominance. Drilling in national parks has always been a Republican plank.