Go back read my post and the OP again. I never said anything about cutting down trees, the OP did. I was talking about trimming the dead palm fronds and the huge fruit clusters out of palm trees using a pole saw NOT CUTTING THROUGH THE TRUNK. And in fact, I did that job earlier today. And FYI, all of the yards in this neighborhood have palm trees in them and the tree trimming companies do it exactly the way way. They're out there trimming somebody's trees literally every week so I've seen them do it a thousand times.
The OP asked about cutting thru the trunk of a tree but he never said what size tree., which is why I asked. I also stated that unless it was small tree, it was unlikely that any electric chain saw (not just a pole saw BTW) would have enough power for that job and I recommended that the OP use a gas powered chain saw for that job.
FYI I have used my Sun Joe electric pole chain saw to cut down at least 20 trees on my other property but nothing over about 20 feet high and or larger than about 10" in diameter. A pole saw is capable of it but you have to keep the chain sharp and be patient about cutting through the tree and you have to cut in from both sides in order to cut completely through.
And you're dead wrong. I've been using a chain saw for close to 50 years and I've never hurt myself. I used to cut and split about 6 cords of wood (full cords, not face cords) every year and wood was all that I used for heating when I lived in the northern US.