Perhaps you might host hardware designs or art assets that benefit from one kind of forge, alongside code that benefits from another? Or more simply use one forge for CI and another for code review.

How many Debian packages have patches applied to upstream?

I kind of appreciate that debian put FOSS at a core value very early on; in fact, it was the first distribution I used that forced me to learn the commandline. The xorg-server or rather X11 server back then was not working so I only had the commandline, and a lean debian handbook. I typed in the commands and learned from that. Before this I had SUSE and it had a much thicker book, with a fancypants GUI - and it was utterly useless. But that was in 2005 or so.

Now, in 2025, I have not used debian or any debian based distribution in a long time. I either compile from source loosely inspired by LFS/BLFS; or I may use Manjaro typically these days, simply because it is the closest to a modern slackware variant (despite systemd; slackware I used for a long time, but sadly it slowed down too much in the last 10 years, even with modern variants such as alienbob's slackware variant - manjaro moves forward like 100x faster and it also works at the same time, including when I want to compile from source; for some reason, many older distributions failed to adapt to the modern era. Systemd may be one barrier here, but the issue is much more fundamental than that. For instance, you have many more packages now, and many things take longer to compile, e. g. LLVM and what not, which in turn is needed for mesa, then we have cmake, meson/ninja and so forth. A lot more software to handle nowadays).