Just to point out that you either opt in to the technology or you opt out. In the game under discussion, Bournemouth complain about the 'ghost' goal and how the technology should have given it.
After the game Wilder said that, in mitigation for the Blades being robbed, that Villa had a stonewall penalty turned down after the break. This decision was not looked at again by the technology, so, in that sense, we were 'robbed' as well.