Yeah the boot process is a mess! Debian’s noisy GRUB and unsightly boot text is an obvious and unnecessary paint point for a desktop user but very desirable for server installations. You do have some options though!

Carlo Contavalli apparently has a relatively simple work-around discussed at https://rabexc.org/posts/grub-shush. What I’ve done in the past is rebuilding Ubuntu’s source deb package for GRUB against my Debian system. You can grab it at https://packages.ubuntu.com/source/lunar/grub2. Build instructions can be found here https://unix.stackexchange.com/questions/117503/how-to-compile-a-debian-package-from-source.

The great thing about Debian, Linux, and FLOSS is that you can even automate downloading Debian’s source package when it gets updated, applying the silent patch, applying Ubuntu’s compilation options, compiling the deb, and installing the deb! But yeah why can some package maintainer not provide such as an option in the repository! It’s really an annoyance for many and almost makes me feel like I’m not the type of user the Debian community desires. Like, “Wait… what? You like pretty stuff? GTFO!” Maybe its even true? Hopefully you will enjoy using Debian! Its most preferable to Ubuntu in many ways these days!