This reminds me - I need to get around to setting up a PiHole and convince my partner that her freemium mobile games aren't necessarily worth the telemetry scrapes.
My girlfriend deliberately watches the extra ads to get in-game rewards, so I can't even pihole the whole home network unless I exclude her phone. (I find that most of these games work fine if you block ads, but they also don't give you the rewards for watching an ad that never loaded.)
I've had a PiHole running on a NUC for about 2.5 years. I adore it. It should be built into every consumer router.
My wife still plays her freemium games, the ads just don't load. She took out one of those games when we were sitting at the airport once. She was frustrated that her once-pleasant strategy game was suddenly crammed full of ads for boomer slot machine apps, and I had to explain that the app had probably always been that way.
a high quality set of FOSS, community inspected "freemium clones" may do more for national security and individual privacy compared to yet another crypto library with zero novel mathematics just another reimplementation of specs...