lol, you think i don't know about these things intimately, it's my work
just got notified yesterday that ICP is now adding gateways, and there is a list of about 30 on the configuration being provided
and i'm extremely skeptical about arweave and i am actually working with it... been designing data structures for a social network aggregator
the gateways are just caching proxies, much like the edges of cloudflare's DDoS protection system, it's to shift work away from authoritative replicas
and the reason why these "cryptos" need these things is that there is no incentive to run a non-authoritative replica, unlike with bitcoin, where the incentives are privacy and reliability for your payment infrastructure
the fact that payment/transfer use case is so minimally useful and not valuable to these networks is the biggest red flag that they don't survive once the marketing engine slows down