Battery pack improvements have to be right up there with why electric have gotten so much better now.

The new tabless batteries in particular are a good step forward even with older tools. And they are last 18 months or less depending on your tool colour of choice.

Really big tools like most landscaping or concrete tools that use the really big batteries (think back pack batteries) have an insane amount of watts they can push out.

I never used petrol tools but I did use mains tools a lot due to the extra power but now 240v is often lower than the top battery tools now.

What year was the weak one purchased?

You underestimate just how big and heavy of a battery you would need to power a leaf blower all day. Gasoline has 50-80x more energy density than a lithium battery.

I suppose you could bring a bank of smaller batteries with you and swap them out throughout the day, but that means another piece of equipment to lug around, and climate control becomes an issue if you live in a hot climate. Batteries and heat are not a good combo for safety and reliability.

Most of the stuff's pretty good but finish nailers aren't quite there unless you're using the smallest brads available.