The whole idea of a blockchain is reputation CAN be built up over time, because every transaction is recorded and there might even be incentives to associate nodes to show X nines of pool reliability.
Is it a bad idea to use this as your only source of storage? Of course. Is it less useful than AWS if you do large local burst queries? Of course.
But none of the concerns mentioned in the post are relevant. This can be cheaper than AWS because they charge an enormous markup, and this automatically provides worldwide replication and accessibility.
Amazon already erases books from Kindles, Google scans your Docs for blasphemy against Fauci, and both have been known to throw businesses off their services. In a few years it will seem crazy not to have an extra copy of your data on here.