The USSC case was about a police department that was just flying over whole neighborhoods with IR cameras looking for “hot” houses which would be grow homes.
they were looking inside homes with tech and were doing so without any probable cause and without any warrant. The USSC slapped them hard over that.
Better tech does not make peeping legal.
Had they been flying generally and seen marijuana plants growing visually outside a building, they would have been fine, but as you said the previous case was a no no.
In this case, they are fine however. Courts are loathe to enter into how an arrest was made. People kidnapped overseas by private citizens and returned to the US against their will have been held to have no immunity from arrest.