Except that in routing he would have been overwhelmed by FLARM responses - a distraction, or "turn the darned thing off".
FLARM is not going to be any use v moving traffic if it gives you a response only when you are (say) 750 ft away. The combined speed would mean the time between alarm and impact would be of no use. Reports at (say) 2000 ft would mean one in my cab would be beeping constantly, as I am often 1,000 to 1,500 ft AGL.
Helicopters are designed to operate in that kind of environment. It would take the design of a purpose-built system.
Then, in this case, he knew he was low because he was intending to land, so he would expect the FLARM warning. So what use?
Ag Bi post is on the nail here.