Hi oligees,
I certainly understand your frustration.
This question has been moved to Cineversity Site Issues, as I do not found any other forum where it should be. Note, the Tutorial-Question should only be used with the Help link below the tutorial. Anything else will not stay organized.
Yes, the Caps were updated a half year ago, in R21.
https://help.maxon.net/us/index.html#OEXTRUDE-ID_CAPSANDBEVELS
Your question: “How old are the tutorial videos?”
It is easily answered by the release number it was made with or by the copyright entry at the start.
If the question was about this one here:
https://www.cineversity.com/vidplaytut/getting_started_with_cinema_4d_part_04_introduction_to_generator_object_01
( …there are more Getting Started series available.)
Answer: It was done roughly 1.5 years ago.
If you have any question, or the tutorial leaves you not satisfied, please ask in the Q&A, I will do my best to fill in what is needed.
All the best, stay safe, stay healthy.