1 - Very few people conduct "proper scholarship", and fail to trace ideas back to their original inception and cite them correctly. This happens time and again in deep learning, where 30+ year old ideas are claimed as "novel" over and over. Many times out of malice by the authors, sometimes out of ignorance.
2 - Peer review in many parts of the industry+research is a joke. Mostly shouldered by early graduate students who don't really know the field well and an incredibly noisy process.
3 - It is common practice now to dump out one's "kitchen sink" of ideas rather than properly refined stuff. Hence the increase in LinkedIn spam, blog spam, arXiv spam style of papers.
