Have a look at how the bucket is swinging-he is not able to stabilize it on his approach.
Have a look at his pattern-it is the pattern a "low time pilot" would choose...
Have a look at his drops-they are inaccurate, and in the wrong spots.
Fighting fire does NOT mean to drop water into the flames-more important than that is to cut the way the fire will take, and prevent it from growing...
Last but not least his turns are too big-he could be more efficient than that.
With that short line, the wind (and oxygen) he is putting into the fire have a bigger effect than the few drops of water (that he canīt drop in the right spots)...
But i have seen pilots like this many times-in Portugal and Spain....
Donīt want to comment on that any further......