This is exactly how they worded warnings for my Nest Thermostat before one day killing the service and trying to upsell me a newer, more expensive model.

It’s time to say goodbye to Fitbit before Fitbit says goodbye to you.

Google kills every service it touches.

This tracker site also goes further back but around 2019 I suspect it was also . . . Killed by Google.

Google have owned Fitbit simce 2021