It's a bit annoying to see something I think is worth keeping on a website, only to find that the author has excluded their website from the Wayback Machine.
Now the content can't be stored easily in a reliable way. I would have to host it myself and make some solution to find it.
in case it’s helpful for you, what i do when i find an article i really enjoy and want to keep to maybe revisit: i have a folder in my google drive for these with some sub-directories for light categorization, and then save a pdf copy of the article in there. don’t have to worry about a website going away in the future, and you get searchability