If you can't handle the old way, then you're clearly not ready for Arch.
Being real slackware is only for a certain type of autistic these days.
I do like that it is still around to show the old way Linux distros did things. And also gives a very different experience than any other modern distro will give you. If you have a specific set of things you want to do, and those these involve stuff outside of what they provide. You are very much on your own.
For the people reading this, that don't know how slackware does things.
They have their repo, and instead of having a collection of packages they send out in an iso, they recommend installing everything they have packaged from the iso. (It's about 15Gb of programs if I recall correctly). They get updates when they decide they have the next version good enough to send it out. So not exactly like Debian stable where its more or less a long, but fixed schedule. It's just when they feel they have the next version done.
Part of the idea behind installing the entirety of the package is, that, that is what a distro is. A combined set of curated packages. So that is what slackware does. The other reason, why they recommend installing everything is, because while they do have package managers. There is no dependency resolution. So you have to deal with all of that yourself. And if you left out packages you might have actually needed when installing it. Things can get very tedious, very quickly.
There are 3rd party packages managers, that can do that for you, as well as 3rd party binary repos, along with slack builds. Which is basically the aur but slackware as you could have probably guessed.
Other things are also a bit different than what you might expect if you are coming from a more modern distro. Like the way the paths are separated for the root users, from the user accounts. So you are expected to su into the root account to do things like run the package manager. Rather than being able to access them with sudo in your normal account. Of course you can change things like that. But that isn't the default behavior.
There are a lot of other things that are done differently than what you might expect now days. But you can look into it yourself if you are still interested.
Like I said in the beginning of this. It's interesting, and I'm glad it is still around. I just don't know how many people would want to use it still.