They lost a lifetime customer in me - i think i have spent close to 20k on garmin gear between my wife and myself, watches, gps devices for cars, boats, and hiking gear. If they refuse to give me access to my data, i will (a) lobby for laws to be passed to make this mandatory (b) absolutely never ever buy anything garmin until i see a reversal of this policy and an apology.

More broadly though, its yet another service that blocks API access. No doubt this is caused by proliferation of amateurs armed with agentic tools building nice, personalized frontends for themselves. Companies seem to absolutely hate it when people dont go through their shitty websites with dark patterns, misleading search results and analytics.