openSUSE also has a simple FDE setup. Just check a box and enter a passphrase during install. It's not default, but it's about as easy as possible to set up.

No, you're right that it has scripts, they're just not the scripts used by SysV-style init systems. They have different names, are in different locations, and are executed differently.

I used Slackware for several years back in the 90s, and from that experience I'd recommend against learning it. I mean, with VMs today it's simple to try new distributions, so go for it, but I'd put it waaaaay down the list of distributions/operating systems to try. If you have anything else you're interested, put it first. Slackware is standard Linux so there's nothing really special you'd find when using it, and it's just a painful experience in general. I think some people will argue that it helps you "really learn Linux", but I don't think so. It just helps you learn Slackware's idiosyncrasies, and learning pretty much any other distribution would be more beneficial than that.

Slackware has advanced from when I used it in the 90s, but only barely (they have a network-based package manager now, I guess, although it proudly avoids dependency resolution!)

Slackware uses the sysvinit program, but doesn't have System V-style scripts. Which is somewhat confusing, but sysvinit is a basic init program that will just do whatever /etc/inittab tells it, so you can write your startup scripts to work however you want.

Slackware uses what people tend to call a BSD-style init, but it's nothing like the modern BSDs, nor the older BSDs, not really. If you use Slackware, you'll learn how Slackware's init system works, but that's about it.

I can second Beelink here. I bought a Beelink SER5 for US$380 as a gaming computer for my kids. It's an AMD Ryzen 7 5800H with a Vega GPU, 16G RAM and a 500GB SSD. It probably won't work well with the latest graphics-intensive games, but it's been great so far with a bunch of games my kids like.

That one worked so well that when I needed a new desktop computer for their schoolwork and similar, I got another Beelink, this time a Mini S12 for US$200. It's an Intel N95 with 8G RAM and a 256G SSD. Works absolutely fantastically for its purpose.

Both are tiny and silent.

I used Solus for a while on my laptop. One day a minor kernel version bump caused my display to stay black. I reported it to the Solus bug tracker and they told me it's not their problem, and I should deal with the kernel devs. But of course the kernel devs reasonably tell you to deal with your distribution if they've modified the kernel, which Solus had.

So I installed Tumbleweed and never looked back. I don't miss Solus. It was fine, but I don't trust it now, the way I do trust Tumbleweed.

Slackware 3.0, so must have been late 1995 to early/mid 1996. It was included with the book Linux Unleashed, I believe.

I recall having to rebuild the kernel to get sound drivers working (voxware, if I recall). I can't remember if they were included with the kernel, or if I had to patch it. I followed the directions in the book, presumably including updating LILO, and it actually worked. I think that if I broke the kernel, there's a good chance I'd've given up on Linux at that point, so good thing it worked first try!