If I saw that video a few years ago I wouldn't think it was fake (Like, paid actors) or CGI. Even now the biggest problem is oddly the voice which has the 2026 era AI synthesized voice, which has a pretty huge industry trying to improve while having a bajillion hours of highly labeled data to work from, so don't count on relying on synth-sounding voice for AI detection.
For this specific video, tree-drama between neighbors is a consistent problem, it's only the old man crying and his story that's exceptional. In terms of content, the video would be more believable if they had less professional looking arborists, since someone who shows up with a hard-hat, safety vest might and branded truck probably knows better than to remove a really beautiful oak tree in a dense suburban neighborhood without checking the right boxes. They might be held liable for the removal if they didn't follow the state / city law around the work. Conversely, a common problem is people getting quotes from professional arborists, balking at the price because how hard is it to cut down a tree? and then going with "some guy my friend knows who has a chainsaw", to hilarious effect.