How can you make the system print dialogue default in chromium?

When using the native print dialog in chromium (installed via snap) in Ubuntu 21.04, I get problems: it takes a long time to render, makes me unable to choose a page range (until the rendering is complete), and seems not to be able to work if not installed with extra permissions (with snap install --devmode chromium) (apparmor disables the access to the ppd file as can be seen from journalctl).

How do I make it use the system print dialog? (Always, no matter how it is invoked: from shell or from the menu/icon.)

If you have problems with chromium's own print dialog (the "print-preview" one)--and I believe the recent snaps with chromium all have problems as described in the question--then you can simply switch to the system print dialog (with a button in the dialog or by invoking it with Ctrl-Shift-P instead of Ctrl-P).

Now we should think how to make this easier for the user of chromium: so that the user won't have to remember these tricks and so that the one won't be faced with the problematic print-preview dialog whenever one wants to print from chromium...

chromium has actually (like chrome) a command-line option that makes it use the system print dialog immediately instead of its own print-preview dialog. You should run it as:

chromium --disable-print-preview

But that's a one-time solution.

Now we should wonder how to conveniently always use this option whenever we start chromium (either from the menu/icon or from shell)... And after a while, I've found the answer:

To get this option always active for chromium installed via snap (for a user, i.e., yourself) you should put it into ~/.chromium-browser.init as described in http://askubuntu.com/a/1215010/19753 :

CHROMIUM_FLAGS="--disable-print-preview"