Battery Dead problems of the 2018 Subaru Impreza

I lease a 2018 Subaru Impreza, which currently has about 14,000 miles. Since January 2021, it's battery has failed multiple times. I have taken the car to the dealer (dunning Subaru in ann arbor, mi) and the service department has installed 4 new batteries. Their diagnosis has been that as long as I don't drive more often and farther (in these vague terms) my car's battery will continue to fail. The last time I took my car to get it fixed after it stranded me, on April 16, the dealership and Subaru of America's consumer advocate office both suggested that I purchase an off-market battery tender to recharge the battery. This means that they anticipate their car battery will fail with my current driving needs. In other words, the vehicle is unreliable. But from their perspective, I am at fault for not driving more.

Oem battery failed and left driver stranded in Nov 2020. Dealer replaced battery at that time. Dealer had to replace battery again today, 04/02/2021 because it was also failing. Dealer would not acknowledge that issue was with car. Simply stated that they would continue to replace failed batteries if within warranty period. Extremely dangerous. When battery fails, car is unresponsive to any/all commands.