Yes I do understand what author wrote as I read the whole thing, but I argue that title is not universally true.

Like we have OLAP and OLTP, there are still batch jobs that need to happen before you can see your dashboard, we have multiple users using the same resources, there are still DB Locks when writing needed, there are "first load" issues

— heck now we have to compete for resources with even more bots than ever.

Transferring 10GB or 1TB of data still not going to be instant laws of physics still apply.