Comment by bluGill

Yeah, when auto first came out a few people started abusing it everywhere making for unreadable code. Most developers settled quickly on much better rules for using auto that do not destroy readability, and never abused it in the first place. Auto is intended for and works very well to avoid typing very long types where you often never care.

Iterators is the common example: the type name is always long, and nearly always used in a context where it is obvious. Even if you do care about the type, looking up the iterator is wrong - you always first look up the base type (ie std:vector) first to understand the iterator, only rarely do you need to dig into the iterator once you understand the base type.

Generic code (template and non-template) are the other - they type could be anything, so trying to specify more detail isn't going to gain you anything.