Just in case you don't realize it, 'flat earth' is a psy-op which gives losers something to use against ANY idea which doesn't align with their corp/gov programing.  Nobody actually believes the flat-earth nonsense.

The syllogistic logic here is:

 1.  Any idea which I'm triggered by [usually anything not approved by Big Bro] is like 'flat earth'.

 2.  'flat earth' is idiotic.

 3.  therefore, the idea which I'm triggered by is idiotic.

The whole logical chain it itself so stupid (absurdly erroneous premise) that I don't think that formal logicians even have a term for that particular fallacy.