There is a wide gulf between the claims of the Blockchain community and the technological reality. For example, I hadn't heard of Arweave before you mentioned it so I looked into it.
From the splash page:
"Store data, permanently." "creating truly permanent data storage for the first time"
From the 'yellow paper'.
"[T]he core Arweave team does not expect that the network as it is currently formulated will continue to produce blocks in true perpetuity. This does not, however, mean that we expect that the information stored inside the weave will be lost after the final block is mined. It is our expectation that when eventually a permanent information storage system more suited to the challenges of the time emerges, the Arweave’s data will be ‘subsumed’ into this network. After the mining of the final block, the financial incentive mechanisms for data preservation will subside and give way to social incentives for data preservation"
The "truly permanent" aspect is based on hand waving and hoping that this system (which was designed with a finite lifetime) will be picked up and stored by someone else.
I have nothing against crypto or this idea (in fact I like that someone is working on this!), but the baseless claims, the barely-honest way that companies present their technology, the blatantly unsolved problems that underly the big claims and dreams - it's all so exhausting. Far too often when I investigate projects in the Blockchain space I try to understand how a company has achieved a shockingly impressive goal only to find that underneath the hype there is no solution, just blind faith and a promise that the core problems will be solved in the future.
I don't know how you can look at the Blockchain space and see anything other than: interesting but very incomplete tech propping up preposterous claims.