Why does the Spectacles hardware generation matter?
The Spectacles name spans different products. Hardware, supported APIs and distribution paths must be checked for the exact generation. A feature shown in one device's tutorial cannot be silently assigned to another.
Version the demonstration as well as the code
Describe a working example with its device generation, software version and installation route. That is enough context for another developer to begin reproducing it. Without those details, a video can remain impressive while being difficult to turn into a practical starting point.
If an older sample contains an input or rendering feature your editor cannot find, first compare the documented platform requirements. Rewriting the sample blindly can waste time on a compatibility issue. A short version record often answers the question before any debugging is necessary.