You genuinely don't understand the use of "so let's ban that while we're at it" as an escalation of the original concept of taxing something?
Ok Redsam, I'll explain this to you one time. After that you're on your own. I listed a few things that were arguably bad for you and one thing I personally didn't like, but lumped them all together for taxation. Then I explained that my tax on licorice originated from a personal dislike, but that we should simply ban it "while we're at it". It was commentary on the fact that once you start picking winners and losers, it's very difficult to differentiate legitimate targets from personal opinion.
Now back to the expression "while we're at it". Let's try a few more examples.
Example 1: We should imprison white collar criminals (let's just give them life without parole while we're at it).
Example 2: We need tax reform in this country (and eliminate inheritance tax all together while we're at it).
Example 3: I really want to nail Sally (and bang her sister too, while I'm at it).
It's not fun having to explain stuff to you.
Now carry on.