Is it possible to also mention the bullet point on this page? https://wiki.debian.org/CUPSDriverlessPrinting#vendor
"USB print queues previously set up with vendor drivers (HP, Brother, Canon, Samsung etc) will amost certainly cease to work, so they become candidates for deletion. In fact, a user could consider removing the vendor software completely as it doesn't provide any useful function unless it is intended to switch between IPP-over-USB and vendor drivers." Jaycee
