Is stuff online worth saving?

These days whenever I read an interesting article, I will take 2 minutes to copy and paste it into my Obsidian vault under my Articles folder. I'll take care to paste the images as images (and not links) and make sure I've got the author and source URL at the top, and have my separate notes section link to it. It's a bit silly and obsessive, but given how transient content on the Internet is, I think it's necessary to make a copy of anything you care about.

In my day browsers could save an archive of a page

Is this still the case?

They can but generally that includes any Javascript on the same page which sometimes does funny stuff when you open it up offline or after the remote server goes away.