It's not very well defined for two reasons. Its proponents are incoherent as hell and if they outright say the things that they believe the illusion of them being left wing or communists is going to be immediately dispelled.

Patsocs are American communists that are patriotic. What is your general view of patriotism in the USA? I have always associated it with the most bloodthirsty chuds of the country. They are mostly white settler petty bourgeoisie Americans who love it when their country's institutions throw black people in prisons and blow brown people up several continents away. A good number of them are Trump supporters who have acquired a false consciousness where they abhor what they concieve to be the "deep state" and think Trump will champion their cause against these undemocratic institutions by draining the swamp. Patsocs believe that communism as we know it on this instance is anti-American and thus is off-putting for American patriots. So Patsocs have come up with their brand of communism where they try to appeal to these patriots where take a few pinches of Marxist theory and adulterate it with the racist, anti-LGBT worldview of American patriots. This is why prolewiki describes them as tailist. Then when normal communists are extremely bewildered or disturbed by theories of patsocs, they throw an out of context quote from Castro or Mao hoping that it absolves them from having to explain themselves.

If what I said sounds like an unfair caricature-ish representation, consider that Haz (a twitter/twitch personality who is one of the more popular proponents of this ideology) and his group (called Infrared) came up with a manifesto called "MAGA communism". I have also seen Twitter screenshots of them replying to Trump supporters trying to talk to them about maga communism only to be instantly rebuffed but I never verified if they were real.