Is this referring to Alexa, or some other product? Have there been any major notable reports about spying happening with Echos?

With regards to data collection for ads, personalized recommendations and such, are there any major concerns that don't also extend to ex:- visiting a website with a tracking cookie on?

(Don't get me wrong, I'm very wary of this product after Sidewalk [0] which I don't trust from a security perspective wherein as a bug could allow _third parties_ to snoop on me, but I'm just missing what people are talking about w.r.t. surveillance by Amazon itself)

[0] https://www.eff.org/deeplinks/2021/06/understanding-amazon-s...