Most articles aren't archived or have also been scrubbed. Or only have a single recent version archived. For instance archive.is has entries for maybe 2000 out of the 10s of thousands Snopes articles. Of those, less than 5% have multiple archived versions.

https://www.snopes.com/fact-check/*

This isn't exactly the type of site I'd usually reference, but this woman recorded quite a few page delta's about gmo food and Monsanto, and the Snopes pages getting edited after large ad buys by the company.

https://foodbabe.com/do-you-trust-snopes-you-wont-after-read...