I'd consider that deteriorated service.
also just out of curiosity while trying to find historical outage data I found this article.
https://www.theguardian.com/technology/2022/jul/14/twitter-e...
Last july (before elon took over), the site was apparently down for 45 minutes and "one of the site’s longest outages for years". Today it's been basically barely usable for most of the day.
It's hard to find nuance and information anymore. It's as if all we have to work with is politics and hatred.