Yeah I've seen several tear downs and it always looks like that is the case.Not true, iFixit already did a teardown and the battery is easily removable. Stop providing fake news without sources. Thread reported.
And to provide real sources:
iFixit teardown, 8/10 : https://www.ifixit.com/Teardown/Nintendo+Switch+Teardown/78263
SOSAV (iFixit French equivalent), 7.5/10 : https://www.sosav.fr/guides/consoles/nintendo/nintendo-salon/nintendo-switch/demontage-complet/