This is probably the best strategy. One obviously cannot stop them monitoring you since there are just so many different surveillance techniques nowadays. Therefore the best way to deal with it is by constantly throwing garbage and useless data into the pipeline so that it may confuse their algorithms and stop them from profiling the individual.

So they profile you as a person that messes with Alexa.

poisoning the well is my usual strategy with data hungry companies as well.

This was an interesting project from earlier this year:

https://www.theverge.com/circuitbreaker/2019/1/15/18182214/a...

"When the Alias hears its own wake word, it’ll stop broadcasting white noise and wake up Alexa or Google Assistant so you can use them as normal."