The article seems to miss (or perhaps ignore?) the fact that there has been an incredibly massive exodus from formerly-twitter. There just literally aren’t as many people around to see/share things, which is also a contributing factor to not going viral.
Sure, but even if users dropped significantly, they're reporting a drop of multiple magnitudes for the most successful articles. An algorithmic change seems more likely than user activity dropping.
To me that is only indicative of growth, not decline. People are downloading the app in high numbers. Comparing the downloads of the app across time relative to other apps is unscientific.
