Clearly, there's some truth to this perspective. On the other hand, which alternative actually makes this easier? If your schema is non-enforced, and/or your data (and its schema) are in loosely coupled distributed silos, and/or as in the articles case indexes are essentially little programs... Then broad scale schema evolution goes from being difficult to often being effectively entirely infeasible.

It's possible that in turn forces users to adapt and split their changes into smaller chunks, but that's pretty speculative and they might simply fail entirely in the attempt.

Which data stores are more easily evolved than a relational DB with a fairly restrictive schema?