You know Lina Khan lead FTC blocked the deal, but if you check the thread, huge amount of folks aren’t aware of this fact. As an owner of 2 iRobot Roomba I feel so “protected” now, they may become a brick or spy of a foreign company.

The 'we' is doing a lot of work there. 'You' might know, but many do not and explicitly have different views. An example thread: https://news.ycombinator.com/item?id=46330028

I wasn’t aware. It’s kind of useful to imagine a world where those products and the backing of Amazon. I’m not familiar with the market, but I can imagine availability of cheap competitors was the proximate cause of this company’s demise.