It does however affect getting updates from government agencies, and others who insist on only disseminating real-time information to the public via Twitter.
This is the account for traffic events (road closures, traffic accidents, etc) in my city. Not signed in, the latest visible post is from February 2023.
Since I don't have a twitter account, this is now functionally useless.
If you scroll down far enough, there are posts from March and August, but they were "less popular" tweets. Incredibly annoying move by twitter. Who wants to regularly view tweets sorted by "Top All Time"?
Have you tried contacting your government for this issue? From my experience public services are often open about Mastodon once they realize it's the same thing as Twitter, but accessible to everyone.
I have not. I personally don't live in a region where disaster notices are often necessary and I don't have offspring that I have to care for that may be affected, so I'm not really the demographic for the service. I do hope more and more start branching out to the likes of Mastodon or maybe better yet, hosting their own instances.