Two stroke engines should be outlawed entirely. There is no reason for them to still be sold with batteries having advanced as much as they have.

Hand held tools and scooters can be electric, small outboard motors for marine applications can be four stroke or propane fired.

If you're carrying your tool in to somewhere remote for a day's work, filthy old two stroke is the easiest, most energy dense power source. As opposed to a truck load of batteries.

Wait, what. This is about the yard crew and their hand tools. Everyone has electric at home, and the power cord has been invented.

Yard crews can also carry batteries and chargers for hand tools. I know because I’ve helped setup a trailer charging system, powered by solar, for a local landscaping contractor. The only tool they use that is fossil powered is a propane riding mower (which is clean burning). I am working on building them an electric riding mower with reclaimed Tesla modules from an S.

That's great! I'm thinking more of people hiking in to build e.g. remote huts.

I live in DC and am unaware of anyone here needing to pack gas-powered tools in order to build huts in the wilderness.

You're worried for all those people backpacking into remote wilderness to blow leaves.

Gotcha.

I agree this edge case might require less efficient two stroke systems, but is a rare edge case.

In the first world, two stroke is obsolete in every form.

Chainsaws used in forestry is one use case that is still common in many countries, first world or not. But your point is valid.

See parent comment, which references scooters and outboard motors

4-stroke leaf blowers are readily available.