Does academia have a lazy work culture?
Different areas of work look differently. A mechanic, a tailor or a miner perform visible physical operations and deliver an objective and measurable result by hour. Compared with them, office work may seem lazy: people sit at their desks, they are not sweating, can have toilet and drink breaks whenever they want, etc. Also, the result of their work seems less tangible: we do not see goods or materials produced, only papers, and looking from outside, we often can not understand how good the  result is without taking their manager's word for it.

Academic teaching and administration work is very much like office work in a company. Teaching-focused colleges and universities often seem very similar to corporate organisations (with one important difference that they have  less support  structures and security for academics).  

Academic research work seem even less organised and the results seem even less tangible. People either appear sitting at their computers idly (while they are in fact thinking on the problem), or stay at the whiteboard scribbling unreadable equations (still thinking on their problems), or stay at home (thinking about their problems). If you look around, you will see the result of their thinking process (e.g. a computer or smartphone in front of you, as well as many many others). But the results do not jump out of their heads in the same visible way how an ore appears from the mine.

Corporate culture portraits an idealised worker as an energetic, serious man in suit. There are many, many problems with this idealised picture, for example, the fact that it is relatively easy to make such an appearance without any real skill, knowledge and desire to produce a meaningful result. Academia, partly, shares this problem: there is an idealised image of academic (a person excellent in everything, highly introvertial but excellent in communicating complex ideas to different audiences, etc etc), which has little to do with the real academic culture. Many academics visibly change their behaviour when they have to present their results for promotion or appraisal. However, in their natural habitat, they still focus on solving their problems in the way which is most effective for them, do not act to impress you or match your expectations about how this process has to look.