Although the feud between Grays and Braithwaites was bad for Rhodes and Scarlett Meadows County as a whole, the Braithwaites are shown to be the most corrupt and amoral in their affiliation with the Lemoyne Raiders.
That stated, the whole shootout in “A Short Walk in a Pretty Town” is straight-up unhinged in hindsight.
Leigh Gray and Archibald MacGregor in particular were only guilty of being somewhat incompetent at their jobs. Aside from that, their setting up an ambush for the gang despite it resulting in failure was justified, when you consider that they had discovered the gang members were outlaws.