No. I don't feel like this is respectful of autonomy, so I don't engage in it. If someone asks for help or asks questions, I will give them truthful answers at a level they can understand. The only rules I enforce are for devices on my own network, which I filter and control extensively but only at a network level. I don't control any of the devices on the network except those which are purchased by me for my own purposes. I explicitly taught my spouse and children that you should never share passwords with anyone for any reason, including with me. Most of the devices are protected simply by connecting to the network, but mobile devices also have data plans. Almost everyone uses a password manager by choice and on my recommendation, but everybody uses different ones based on what they're most comfortable with.
In this way, people in my family get to choose their own pathway online. They're informed, and they get to make informed choices about what data they care about protecting vs sharing. You can do whatever you want on your own devices, but not on my network, that's mine and I get to set the rules there. For the most part, folks choose my network for protection and performance rather than the wider freedoms of mobile data. I also provide everyone with a VPN account for their mobile devices for when they're out of the house, and most of us use it, but it's entirely optional.