I mean... no? if they have reffed a rule one way for three weeks they shouldn't change it for the fourth.
Well it wouldn't be a change would it? The law hasn't changed, nor the HCP.
It would be identifying they were applying a law wrong and making the right corrections.
Lets be clear - this isn't a TMO thing, this is an on field referee decision as they refer it for the off field review when issuing a card. Jordie Barrett 3 weeks ago (which is as like for like as you can get) was given a yellow card when shown the hit by the TMO. Ref made the call to issue a YC - if the TMO was in the mind that it was a penalty only, they can't make that call - all they can do is not upgrade it when the player is off field.
In the following weeks, if the referee team has discussed this incident and gone, "Yep, got that wrong - it was close to the ruck, low speed/ force into the collision so low danger, PK only next time" - the last thing we need is for them to collectively agree to continuously make the same fuck up over and over again.