Is anyone sick or know anyone

I've been helping out at the store I retired from people. People are just stupid. I do my best to keep my distance from people, but they don't return the courtesy.
Law is 6 ft here, right.
I go to the store yesterday...and when I get the check out...I pass a blue tape line...'didnt notice it at first'
... then i stop and see a sign about waist high that says..." please stand behind the blue tape till the previous customer had paid"...
Once I see that I step back around behind my cart, behind the Blue Line, while my carts is just past the blue line. Well...this old black 'significance realized at the end' ..marine guy in front of me checking out...with about a hundred Keys whistles and three lanyards hanging off his neck starts to go..."uh sir imma need you to get behind the line"
I see I'm behind it already, and so I say 'yeah I just noticed that, thanks.'
He then says.."uh seriously, I need you behind the line, I got kids" ..
now..he is probably 56 yrs old, like his kids are adults...though they could be losers and live with him, I guess.. idgaf, just dont bark at me when I'm not doing any harm..
At that point I told him he could 'finish up and not worry about my ***' ..that's already standing behind the line and dont worry cart want infect him from the10ft away it sat in front of me.
At that point...the checker told him that i was fine, the recommendation is 6ft and that he needed to pay and keep the line moving.. he jumbles his **** into bags taking forever and finally leaves while babbling low volume his concerns.

Only thing I could think was...hes either a paranoid weirdo asshole ...or using this health rec as a tool of racial discrimination.

It was a weird scene all together, felt like launching my cart of **** right into'em and arm sweeping all his **** off the conveyor belt ontop of him.