Personally my biggest distrust of nord comes from their ads. Most notably one where they anthromorphized a guys smart TV, Roomba and phone talking about him when he leaves the room, and others that basically totally misrepresent what a vpn does.
In short, your TV, Phone, etc... most likely share and compile information because of the ACCOUNTS they need to function. using a VPN will do NOTHING to stop google from knowing any android data, Your devices don't hear eachother by listening to the network, which is almost all going to be encrypted protocols anyway, but by sharing accounts.
In short, I've always found nords comercials constantly misleading on what a VPN can and can't protect you from, and to me it seems that's largely so they can market them to people who don't actually have any use for them, and worse doing it to make people feel like they are "protecting themselves" from something that they are just as vulnerable to with the vpn.