The ones with "non replaceable" batteries still has a longer battery life after a battery swap, it just requires a screwdriver and a couple of brain cells.
No, it requires adhesive-removing chemicals, IPA as a bare minimum, dental floss, plastic prying tools, and some idea of battery safety (so you don't turn it into a fireball by trying to extract it aggressively with a screwdriver).
Genuinely struggled to extract a Switch 1 battery from it's adhesive, and I'm usually perfectly comfortable disassembling+reassembling that sort of thing.
The use of adhesives, in excessive quantity/strength, on fragile/dangerous batteries is the problem, not the screwdriver or brain cells.
Quoting just one of the smallest one feels a bit... charged. There's small tradeoffs among all of them when you account for weight.
For everyone else here's the full list:
Switch 2
Battery capacity: 5172mAh, approximately 1% smaller than current version (5220mAh)
Weight: Approximately 411g, around 10g heavier than current version
With Joy-Con 2 controllers attached: Approximately 548g, around 14g heavier than current version (approximately 534g).
JoyCon 2:
Battery capacity: No change.
Weight: each 2g heavier
Switch 2 Pro Controller:
Battery capacity: 897mAh, approximately 16% smaller than current version (1070mAh).
Weight: Approximately 228g, around 7g lighter than current version (approximately 235g).
N64 Controller:
Battery capacity: No change.
Weight: Approximately 234g, around 1g heavier than current version (approximately 233g)
GameCube controller:
Battery capacity: 525mAh, approximately 5% larger than current version (500mAh).
Weight: 215g, around 5g heavier than current version (210g).
Sorry I should have specified that is the pro controller, typical use case is a docked switch and the controller is used while on a couch or some such.
Literally the worst case scenario for dramatic reduction in battery life.
The console one seems the only relevant one. I'm a casual gamer, but the joycon running out of battery doesn't feel that annoying to me. That 16% has a much smaller impact on the JoyCon than on the main device.