Smart home devices don't usually lose support unexpectedly, unless something drastic happens, such as a company collapsing.
At $20, this adds a lot of value to a smart home, especially one where Alexa devices are prominent. Beyond smart home control, you can have your remote perform other Alexa routines around lifestyle, ...
Highlight the app you want to purge and press select it. On the next screen, you'll see options like Launch Application, Force Stop, Clear Cache, and Clear Data.