Ah, sorry, I didn't make it as far in the article.

IMO it really depends on the numbers. I'd be OK if my client downloads 50KB extra data for the already-rendered image but I'll also agree that from 100KB and above it is kind of wasteful and should be computed.

With the modern computing devices we all have -- including 3rd world countries, where a cheap Android phone can still do a lot -- I'd say we should default to computation.