CI 4.0 Micro-framework?

Informally (haven't seen a formal definition), in my eyes, CodeIgniter has always been a micro-framework. :-)

Currently you need to download 1.5 MB zip-archive. Ok, let us assume that some portions of source get stripped and the compressed source of the so-called micro-framework takes about 1MB. What is the point of that. It would be useless burden.