Although we don't see it, all of these developments do actually eventually make their way into battery tech. The batteries of today are not the batteries of 2014.
If you remember what battery powertools were like in early 2010s, it's super obvious how far we've come. The higher end things like battery powered lawn mowers didn't exist, and if you wanted real power, you needed a cord.
I don't always need my lawn mower/blower/weed trimmer on batteries. I wish I could easily plug them in when doing light dut work close to the house. But then they couldn't tie me into their battery ecosystem as easily.
I've seen a Makita eletric brush cutter with an adapter to plug straight into a standard outlet. The person who bought the machine told me it was more expensive than a battery pack but at least it made the machine usable for longer periods of time when energy is available.
I still remember that in the 90s till the 2000s you would get maybe 60 to 90 minutes of battery life out of a new laptop. Then it jumped to 4 or more hours thanks to better batteries, more energy efficient CPUs and displays.
I mowed my grass with a corded mower for a decade until the motor bearing finally disintegrated. Cost me $100 and one blade replacement. No small gas engine was ever that reliable for me
I mentally nicknamed them the twins. Two guys who worked together with their two drills. Each had a double sized DeWalt battery and another spare double sized. Last time I saw them was 2016. So yeah you got an acedotal backing you up.