You also cannot try it out as a 'Live session', to take it for a test run.
I remember the 24 floppies I ordered to first put slack on my machine. Actually got 25 floppies as I ordered them via a ham Radio web site and the 25th floppy came with extra ham software which had to be built to install. Was lots of fun. But when Redhat came out with their boxed set don't remember the version but it was sold in Staples office stores. I bought that and installed readhat on my machine. We only had dialup back then so buying the discs was the way it was done. Been a lot of years since then and I like the new distros better nowSlackware lacked a package manager for a long time in the early days which made it less appealing, less convenient and more laborious than distros using apt and rpm. The cry used to be "tar.gz is a package manager NOT!" Then there were the 24 floppies that it came on when others used CDs. It's default hostname "darkstar" was regarded with irony for the distro still in the dark and a distant sky object from the rest. In fact however, it was an excellent distro, reliable, no less capable than any other distro, just it's own fiddly thing.
Like you I too have discovered that the enthusiasm and drive of Slackers is not there anymore. I noticed a decline in some of the Slackware Forums about 5 years ago.I have been using Slackware for over 20 years. It was my first Linux distribution. However, the community is not the same as it used to be. I feel like the core expertise of the early Slackers, the enthusiasts, is no longer present. That's why I will probably switch to Debian in the near future. My router/NAS has been running stably on Debian for many years already. It will likely happen shortly after Debian Bookworm is released.