No guarantee of security at home of course but they put a big deal on personal responsibility. There certainly is a company culture a bit that way. Nothing perfect of course. Mind you the highest security is in certain on site areas where anything their doesn't leave there. Home working security is to aim high but medium is good enough. Simple things like locking laptop when not at your desk or when someone comes in, in our house I do that plus my son doesn't come in when working.
There is a difference between phones, tablets, and computers and the way smart speakers work. The speakers have to listen to work, it's core to their function. The other devices it's a feature you can turn on or off. I've always had it turned off, disabled for security issues for myself. After I saw the prank played on a lass at my old work on her locked iPhone through voice service. Dodgy text messages and Facebook messages/posts.
In our house there's two smart speakers. My son's got one but it's never plugged in these days since his gaming computer and Spotify. There's n one in the other end of the house to the office. It's on but the plug gets turned off a lot. We've gone off them anyway, not as good as they were since various changes in service. Music was the main use and now so much is held behind premium services, even back in the day if something got too much play it went behind premium service.