Whatever device you’re using to post to Lemmy can easily handle “thousands of transactions per day”. You’re off by several orders of magnitude before transaction processing is a scaling concern.
CDNs exist to reduce lag and optimize media file delivery. They can be decentralized, and internally essentially are, but having a neutral clearing-house helps solve the “leech” problem that thinks like BitTorrent suffer from.






The article is about decentralization of assignment of IP addresses,.not CDNs or social networks.
It’s like "imagine if you and your friends could just make your own phone system by making up your own numbers without having to rent them from telecommunications companies "