The author lifted entire sentences without modification from his sources. E.g. "The parameterized distribution in the code of the autoencoder can be randomly sampled to generate discrete values for latent vectors, which can then be forwarded to the decoder, leading to the generation of new data." I thought this seemed unclear given the previous context, so I looked at the source article he linked to [1] and found that exact sentence. This kind of plagiarism is not cool. If you can't explain the concept, don't publish the article.
[1] https://blog.roboflow.com/what-is-an-autoencoder-computer-vi...