If you don’t want to share, change your settings.
It has come to light that — for at least some Switch users in North America — the Switch eShop now connects to Google Analytics by default. Likely introduced in the latest firmware update, it seems that anybody with a US Nintendo Account (and possibly other non-EU/Australian accounts) is now automatically opted in for data to be shared between the platform holder and Google.
This was pointed out by Reddit user u/coors_girth after they noticed a previously unseen option appearing at the very bottom of the profile information screen on the console. We were unable to find the option on our European eShops, possible due to differences in European privacy laws, but the setting is present on our US Nintendo Accounts. Another user noted the option also appears on the Japanese Switch eShop.
Read the full article on nintendolife.com