1. Is raspberry.social the Mastodon server by the actual Raspberry people?
2. They hired an ex police person? What is the context here that makes this so dramatic?
3. What is #fediblock? Is this a Mastodon wide block? That terrifies me, that's king of against the whole nature of a decentralised network right? Are we introducing "centralised" behaviour into the decentralised network?
2. Raspberry pi hired an ex police person, I guess the concern is that he is a maker who previously made surveillance gadgets.
3. #fediblock is an announcement of defederation. As a server admin, you can jump in on #fediblocks. Or, you may want to stay federated with the instance. Originally they were used to announce defederation with pedophilia/gore/spam/harassment instances and other things you don't want your community getting polluted with. They are still used for that, but there's a lot of activism in #fediblock also.
#fediblock isn't a requirement for any instance to take part in.
The problem was made worse because the Raspberry pi team wouldn't engage with other instances to try and resolve the issue.
Yes there are going to be issues with the #fediblock, bigger instances will always have more power to silence others.