Not just East Coast. In 2021 California passed a law essentially banning all small gas powered motors starting next year:
https://www.aol.com/news/states-towns-consider-banning-gas-155805064.html
So in 20+ yrs when the mowers and blowers start to give up the ghost.....the owners will have them serviced/repaired or buy an electric tool.
Eventually in about 30 yrs the conversion will be completed.