Some people change phones every year, or more often than that, then there’s all the coffee makers, small electronics nobody thinks about (watches, radios), computers and laptops, tvs, speakers, smart lights, kitchen tools, cars, anything digital (like calipers), power tools… Depending on what you count, it could add up to ridiculous numbers for some, skewing the average
My point was that there is no need to replicate everything everywhere. If the data is replicated a cross 5 instances per region for instance, it’s enough for replication needs. If you self host lemmy and subscribes to large communities on your instance, you can quickly overload your server. We need activity pub to be more lightweight if we want smaller instances to thrive.