Hi Tom, it's Anthony from SeedLegals here, author of that article.
Actually I've seen nothing to suggest that valuations have changed since our article. If you're seeing differently, all feedback welcome.
I should add that I always have a lingering concern that so many people reference that article - both founders and investors - that in some ways it's moved from reflecting market to making market... which means the bar to making sure it's accurate is high.
And, there's lots of resources and data, like this: https://seedlegals.com/termometer/