The difference between an incorrect description of a paraglider launch and a nonsensical comparison regarding the amount of data Google stores is that the latter is intentionally being presented as a proxy for the potential impact of that data.

To be able to interpret the article in a useful way, it is important to be aware that a single long, high-res youtube video could be 5.5 Gb and therefore that figure doesn't imply anything about what google knows about you. Of course, it would be easy for a non-expert to mischaracterize an aircraft accident in a way that matters to a layperson's understanding of why the accident happened and who is responsible.