>That's the constitutional bedrock of our societies. That doesn't mean it's always true but if you denounce that as a legitimate and achievable goal then you don't have a society anymore.
Sure you do. You just don't have a society that looks like ours does. And that doesn't necessarily mean monarchy or fascism or chaos as the only alternative.
The society you do get, might still even have a government too! Thinking government is not beneficial doesn't mean you dispense altogether with one. It can mean you have very difference tolerance and guardrails for it, as opposed to when defaulting to "government is beneficial".
What's more "government is not beneficial" might not even mean "any and all government is not beneficial". It might mean government of the type that's the "constitutional bedrock of our societies", and the mockery they call "democratic rule" is not.
> Sure you do. You just don't have a society that looks like ours does.
You've skipped a few steps, until you overthrow the government all you have a broken society with a system of governance that's deemed to be illegitimate, therefore its rules and actions are illegitimate.
If you want to tear up the constitution and implement a new system of governance with "less government" then you're effectively advocating for a revolution. Just be honest and don't try to sell this as an incremental policy change.