I looked at Miele, saw the requirement for using their refill containers (TwinDos†). Noticed an option for using not theirs as a fallback but it all seemed a bit convoluted.
Then I took a look at some high-ish end LG and they had sort of the same principle (EZDispense††), except the dispenser sits like a usual tray that you fill in with regular off-the-shelf liquid stuff, and then you're good for a while. The whole wifi/app stuff is entirely optional, the machine is fully functional through the panel without the app. So I got that one, very happy so far.
† https://www.mieleusa.com/c/laundry-tech-washing-machines-aut...
†† https://www.lg.com/in/magazine/easing-laundry-with-ezdispens...
Also, the Miele powdered detergent, in my personal opinion, sucks. And it leaves some residue behind. Yuck.
If you should be using them and aren’t, the detergent in the disks doesn’t work. With them (I live with hard water, though a home filter takes a lot of it out) the disks work quite well in my experience.