Outcome Bias?
The independent Disciplinary Committee was chaired by Adam Casselden SC (Australia), joined by former international referees Donal Courtney (Ireland) and Juan Pablo Spirandelli (Argentina).
The player accepted that foul play had occurred and that the offence warranted a red card.
Having considered all the available evidence, the submissions by the player and his representative, the independent Committee categorised the act of foul play as being at the top end of the scale of seriousness of offending, having regard to the degree of recklessness involved in the offending, the vulnerability of the victim player and
the significant injury to him. Applying Appendix 1 to Regulation 17, the independent Committee determined that the applicable entry point is 12 matches.
Having considered the mitigating factors, including admission of foul play and correctness of the red card at the first opportunity, his disciplinary record and apology to the player, the independent Committee reduced the sanction by the maximum mitigation of 50 per cent.
Also via the link, a video explaining the World Rugby disciplinary process and how it is applied but saying what you do doesn't make it so.
Given the number of high shots and head clashes that the system has not dealt with, without even considering those they have reviewed and not sanctioned, it is very clear the deterrent is weak and it certainly doesn't seem to be working