> into a single tweet

It would say something like, "This text attempts to summarize the entirety of human knowledge".

Still, IMO summarizing videos is useful. Even if the summary is not accurate or a 1:1 representation of the content, you can mostly get the gist of what is being said without being baited into watching advertisements.

Although, this site doesn't seem to do a great job at summaries. Kagi's universal summarizer has much better results, https://kagi.com/summarizer/index.html . However, it requires transcripts to be available for videos.