Well, obviously I don't mean all human endeavour is motivated by laziness. Just that a great many developments in human technology at all levels have been adopted as a way of trying to avoid doing more work than we have to, either on the part of the person doing the development, or on the part of other people who might make use of the innoivation.

And yes, I said "all". Exaggeration and simplification of that kind is a customary element in human discourse, and is normally understood in that sense.

For example sentences beginning "I always.." are very rarely strictly and literally true. When we hear someone say "I'm going to kill that man" or "I'd give my right arm to..." we do not normally assume that they are speaking the strict and literal truth.