The differences are obvious. Most jobs utilizing chippers, chainsaws, or jackhammers are one time jobs, not weekly, or even more frequently.
People are much more willing to forgive the disturbance which occurs with one time jobs than regular maintenance type jobs.
And people are more likely to use a labor-saving device for jobs that they have to do regularly.
It doesn't change the fact that people are very annoyed by, specifically, leaf blowers, and often don't find the regular disturbance they cause to be justified.
Missing the point again, I see.
Really, I find it rather funny that you can't find the closer analogy to the leaf blower. It's the gas powered lawn mower. And yet, even that analogy fails completely. Why? Because no matter how close the analogy gets, it doesn't change the simple fact: People accept lawn mowers. But they don't really accept leaf blowers. You can throw your analysis at the situation all you want, but you can't change those facts.