Any reason you would recommend Slackware specifically?

I’ve watched a few Youtube videos on the history of it and the advantages of it but I don’t recall much. It seemed like a lot of people who had used Slackware a long time ago simply continuing to use Slackware and people using at as a learning tool because of how user involved it is.

Would you recommend people start with Slackware itself or a Slackware-based distro?