This is a really annoying trend in blogging / internet writing recently. It's very common now for even technical articles (like this one) to have multiple irrelevant movie/TV gifs embedded, almost like the author is replying with reaction gifs to their own writing.

Not only is it a bunch of irrelevant content that makes reading the actual text more annoying because you've got at least one short video looping on your screen the whole time, it also increases the data usage massively. This article transfers over 70MB, with over 50MB of that being from the gifs.