Just tell em, "What if I told you theres an OS with no annoying ads popping on your screen 24/7?" -- "Yeah? Is that a modified Wi--" -- "Nope. Linux". And bam. :^)
Somehow unrelated to what this video proposes, Linux has taught and gave me so many possibilities that I would never, ever be able to if I (still) were using Windows to this very day. In other words... thanks to Linux, I can now operate and have fun in a under 3W device.
I haven't tried it, but I suppose you'll do just fine with debian sid. i.e edit /etc/apt/sources.list, swap $distro_nickname for sid, sudo apt update, sudo apt full-upgrade.
That'd be the same as asking if leaving your house front door open is dangerous -- it depends. If an ill-intended individual sees it open however, s/he won't think twice to trash your home.
I don't do much other than setting up ufw to block all ssh connections and the "standard" firejail configuration. There is also nextdns set up via my sbc (Orange pi zero 3) which is pretty nice for a "quasi-network-wide ublock".
Been using Wayland since 3'ish years ago and my desktop experience has been really smooth -- no crashes, errors or anything of the sort. Everything "just werks" just as if I were on Xorg instead. Even on a completely obscure/zero linux support single board computer (Orange pi zero 3).
Yeah... I'd rather spend some time doing those manually and not risk losing money (or even worse) because of a mere couple seconds less on the internet.
Call me a conspirator or whatever you want, but this seems like a "under-the-carpet" cope -- "I can't/won't bother learning how to configure Linux, so I'll throw a fit, raise a baseless assumption about it and move on to my safe bubble, i.e Winblows.". Because even if it does have lack of better options for battery -- it does have lots of user control. Which you should prioritize over being "spoonfed" by the system. Specially in times like these that anyone can track your device even if it is turned off thanks to bluetooth.
Why not? It's simple, lightweight, has a lot of interesting commands that fills its respective niche really well (btop, for instance) and (the best of all) it doesn't explode my PC everytime I run such commands.
tl;dr: Windows poser roleplaying as a Linux tryhard tries to convince a new Linux user