2 years is up to 2 years. Did you read what Blink considers standard use so it will go 2 years?
Typical real world results are 6 to 18 months depending on motion activities and camera settings. Batteries are 1 dollar each when bought in large multi packages.
So every 6 months, climb a ladder, replace batteries, spend 2 bucks, clean camera while your up there. No big deal.
The it didn’t last 2 years and where the hell is the doorbell are long worn out complaints. Wipe your tears and move on.