Battery power will save the day. when my gas powered tools give it up I switch them over to a new battery unit. I am very satisfied with the newer generation that uses 28 volt batteries. Still don’t have a replacement for the Troy built rotor tiller.
A rototiller would need to be replaced by a good heavy duty grub hoe. That’s my go to vegetable garden and ground clearing/prep tool.
Same goes with snow blowers. Too much power/torque required to operate.
A customer I had actually bought a battery snow blower - it was hysterical to watch him try to get it through just 3 inches of heavy wet snow. He would get it stuck or clogged in short order and then have to use a shovel to get it out.