Don't do business with Amazon.
There is a article in German there. Linked the reddit post, since it is in English.
It's Google, so they'll probably force you to create a YouTube account to watch videos recorded by your security system, put adverts for private security services over the top, share what time you're usually out of the house with third parties, and then shut down the service after a couple of years.
Google have a reputation (rightly or wrongly) for dropping support for products quickly if they don't want them any more.
In the home security perspective installs can last decades, and changing suppliers can be expensive. that's not a good match for Google's approach.
Google has never made a product that did not collect data in a unique manner from its other products. Between that, the dark patterns, and this recent experience, google the company and the people that work there just give me the creeps.
From previous comment: "I uploaded a picture to google maps as part of a review. About a month later I get an actual notification on my phone - hey do you want to share this picture you took in City Park last weekend? It creeped me out beyond belief. Google had been rifling through my personal pictures in the background while I was going about my life. It was an enormous breach of my personal space and it is just one example of many related to google."
Additionally, I very much want an internet connected smoke alarm. But I would want something from a trustworthy company. And currently google does not fit that profile.
But I don't understand why people intentionally give their photos to a system for processing, apparently happily let it be used for advertising and government surveillance, but then get upset when it's used for features. You're rely happier with everyone spying on you and pretending they aren't?
It was a surprise for me since I forgot I left access to my photos on. iOS 14 resolves this by letting you choose which photos you allow an application to have access to. This cannot come any sooner because that was disturbing.
edit: I shared the original photo because I believe in helping other people.
Google then took liberties with that permission to an extreme. And it was personally revolting to me. I cannot overstate my absolute disgust with what happened there.