We have, now, assertained that inlined videos (for want of a better description) are currently turned off (disabled) for SE 3D Printing, but can be turned on at any time, and there is no need to wait for the site to exit Beta, see Is the "inlining videos" capability turned off on this site?
The question now is, should we enable it?
I have seen a few (2?) cases where the OP has linked to a video in order to succinctly describe their issue. As Ecnerwal points out in their answer to Help understanding bridge settings, watching videos, and in particular having to click on a link to watch them, can be somewhat onerous. Having the video inlined, might make it less so.
BTW, I don't know what [backend or UX] disadvantages there would be to switching it on, although there are these cautionary tales.