When I'm on my laptop, in the train, working on Windows, I can't use my home DNS without exposing it to the world and becoming part of every DDoS attack there is. So, for those situations, I've got Firefox set up to do DoH. Windows can do some DNS encryption through a complex setup of local DNS servers but it's nothing as easy as the standard Linux setup.
Similarly, I use DoT on my phone but if I want to connect to any hotspot, I have to disable DoT because the hotspot login detection fails with DoT configured. I think it's a Xiaomi thing. Regardless, I need to disable it to use. In one particular case (scanning groceries in the supermarket for the automated payout) I can't fall back to LTE like usual. Just in case I forget to turn DoT back on, I've also configured Firefox on my phone to use DoH because the mechanism is there and I might as well.
There's small edge cases where I just like to fall back to browser DoH. DoT and I'm network DNS still works fine, of course.
Similarly, I use DoT on my phone but if I want to connect to any hotspot, I have to disable DoT because the hotspot login detection fails with DoT configured. I think it's a Xiaomi thing. Regardless, I need to disable it to use. In one particular case (scanning groceries in the supermarket for the automated payout) I can't fall back to LTE like usual. Just in case I forget to turn DoT back on, I've also configured Firefox on my phone to use DoH because the mechanism is there and I might as well.
There's small edge cases where I just like to fall back to browser DoH. DoT and I'm network DNS still works fine, of course.