It's one of the only installers that seems to take the longest compatatively and (afaik) doesn't really let you leave it unaftended. Most other distros let you just set everything first then go, but Debian does that and then asks you what DE and other questions mid install..
Another bad one is Fedora's. I'm used to it, of course, but the placement of the buttons to exit screens is all over the fuck, and you better know what you're doing in order to even set the hostname and make a user during install.