All is dependent on what instances your home instance is federated with. Federation/defederation by your home instance determines what you see in All.
Szmer.info is federated with lemmy.world, so you would be able to see politics@lemmy.world, which has US politics. Unless you’ve filtered things out of your feed, but that’s different.
It matters significantly. Depending on the users the all feed is totally different. US politics are almost non existent on szmer.info
Defederation is a secondary point.
All is dependent on what instances your home instance is federated with. Federation/defederation by your home instance determines what you see in All.
Szmer.info is federated with lemmy.world, so you would be able to see politics@lemmy.world, which has US politics. Unless you’ve filtered things out of your feed, but that’s different.
A year ago !politics@lemmy.world wasn’t federated as no one subscribed to it on szmer. Sadly there are now 4 subs to it.
Have you considered asking your admin to hide the community? Programming.dev just did : !meta@programming.dev