"Should be acceptable" is the wrong way to look at it. "Should be illegal" is the question that should be answered.
There's a subtle but important distinction between
> Alcohol is allowed, so cannabis should be allowed.
and
> Alcohol is not illegal, so cannabis should not be illegal.
Our legal system is a default-allow denylist: unless a law says you can't do something, you can. The government doesn't grant permission. It removes it.
So because the government hasn't made the case that we should ban alcohol, I think it's on them to prove that cannabis is somehow worse to justify its banning.