I think sometimes they just pretend they know and they create fake representations. I have never ever read in any latin text anything about that. And they used to drink vinegar instead of wine.
Discussion
The most shared and spread theory is that xylospongium was actually what the video shows
Even Seneca mentions this.
As usual history has different interpretations, but one cannot deny the most spread hypotheses with a bunch of historians' opinions and details.
https://www.bmj.com/content/345/bmj.e8287
https://www.sapiens.org/archaeology/ancient-roman-bathrooms/