2-stroke engines in general are awful for air quality.
https://phys.org/news/2014-05-two-stroke-scooters-super-poll...
https://phys.org/news/2014-05-two-stroke-scooters-super-poll...
Edit: For example, you’ll see where I asked my initial question here
I'm all for electrifying yard tools, but electric blowers still aren't anywhere near a high end Stihl or Husqvarna in performance.
Compare Table 3 to Table 5. PM emissions from exhaust are on the order of 1 gram per hour. Whereas fugitive dust emissions, depending on the surface, are 100s or 1000s of grams per hour.