Yeah, you’re not wrong at all dude.
Although that certainly won’t be a solution I’d personally be driving for.
I fully accept, like I do with my iPhone, that over time battery capacity and health will deteriorate.
Also, as time passes by with developers requiring more juice to keep up with the demand that players insist is necessary in new games, and with which is sometimes offset by firmware updates that can make chip sets more power efficient - battery performance will fluctuate.
I was under no impression that the battery performance of my Switch would be the same two and a half years later as it was day one.
If, I thought I was being left shortchanged by the battery in my console - I’d be on the other side of the fence for real.
As far as as batteries go - nope, forget that. The SP is great case of cells being better than carrying AA or AAA batteries about
Changing out a battery in a Switch is a total doddle too, back comes off, Micro SD card reader pops off, heat shield off, battery pops out. If that’s what you are into.