Companies DO analyze what you say to smart speakers, but only after you have said “ok google, siri, alexa, etc.” (or if they mistake something like “ok to go” as “ok google”). I am not aware of a single reputable source claiming smart speakers are always listening.
The reality is that analyzing a constant stream of audio is way less efficient and accurate than simply profiling users based on information such as internet usage, purchase history, political leanings, etc. If you’re interested in online privacy device fingerprinting is a fascinating topic to start understanding how companies can determine exactly who you are based solely on information about your device. Then they use web tracking to determine what your interests are, who you associate with, how you spend your time, what your beliefs are, how you can be influenced, etc.
Your smart speaker isn’t constantly listening because it doesn’t need to. There are far easier ways to build a more accurate profile on you.
Numix-Circle has been a favorite of mine as long as it has been around. Now, I mostly use Breeze because it is highly compatible, beautiful, and widely used which makes it less jarring when I use other computers.
Back in the Plasma 4 days I joked that the default oxygen theme was ugly on purpose, so users would be forced to dive into customizing their own configuration (which is where KDE Plasma really shines above the rest). I think the defaults have come a long way, and it’s nice to have a stock desktop ready-to-go without much customization.