Backpack blowers all made of metal and weighed tons compared to the plastic-trons we see now with underpowered engines.
Like the technologists, there are others who don't see the forest for the trees either.
If you are a professional gardener, wearing an extra 10-20 pounds on your back all day does not result in a better quality of life. In fact, this is the type of thing that will drive a gardener into early retirement.
There's a reason why some of this stuff is lighter and moved to plastic. And there is nothing new about any of this.
Heck, my (male) scuba instructor back in the Nineties said that the best thing that ever happened to the sport was women. The scuba gear industry had tried to make things slightly smaller and pink. The women didn't buy into that crap. They complained that the gear was too heavy, too uncomfortable, didn't fit well/baggy in the wrong places/too tight in the wrong places, etc.
Same with camping gear. No one hikes around with canvas tents and steel poles anymore. It's all lightweight synthetic fiber (that won't absorb a ton of water when wet) and carbon fiber. Look at the modern military. They aren't carrying around the same gear as WWII soldiers.
Hell, if you can flight nonstop from LA to Auckland, it's because today's planes are better than DC-3s. Speaking about flying, do you still use the same leather-and-wood luggage from seventy years ago that grandma used? The ones with no wheels? They still hold stuff, just like today's plastic/nylon luggage with the four spinner wheels, telescoping handles, expandable zippers.
And today's construction workers don't take metal lunch pails with those glass Thermos bottles to job sites. They take insulated Igloo coolers, some are probably cooled via the truck's 12V socket in the passenger compartment, etc.
There's also a noise component to leaf blowers. Hearing damage is cumulative. Having quieter motors and better designed nozzles to more accurate put the air where you need it to go is an improvement. Same with air dryers.
It's also more pleasant for the people who are surrounded by these infernal devices. My complex's landscaping crew fire up their leaf blowers twice a week. I happen to live on the edge of my complex, so I get noise from the adjacent complex's landscaping crew, despite the fact that my HOA dues don't pay for them. That's right: four days a week I hear leaf blowers.
Heck, some cities around here have banned the use of gas-powered leaf blowers, not just for environmental reasons.
Hell, frankly I'd prefer if the landscaping staff used rakes instead of leaf blowers. But in fact, they do. If I'm lounging at the swimming pool when the landscaping crew comes by to do a pass, they switch to manual tools.
Taking the high and almighty "old ways are better than new ways always" is short sighted.
At least in some cities around here, fire up your super-loud and powerful gas-powered leaf blower and you may get a cease-and-desist order from local law enforcement.
Do you have kids? If so, do they only wear natural fiber clothes? Leather shoes that are resoled regularly? Do they bring fountain pens, refillable piston cartridges and inkwell jars to school? Because the disposable ink cartridges are wasteful.
We get it. You are saving a bunch of money by using old things. But sometimes sticking with old things isn't an improvement in the quality of life.
I like old things too, the average age of my wristwatches is probably 20 years. My car is 15 years old.
But I am not so stupid enough to think that spending $150-200 on a dishwasher repair call is better than getting a new one. Did you know that today's dishwashers use less electricity
AND less water? Same with clothes washers. Yeah, your 30-year-old top-loading laundry machine is something that one won't see much in Europe today.
The "holier than thou" stance is really, really hard to defend. Do you really think you have a solid grasp on these issues from a macro viewpoint?