After all, no different than "Line-up and wait (or position and hold) after landing Delta 757"...
I see what you mean, but I disagree. If you line up and wait you won't crash unless you do something beyond that clearance ie accelerate down the runway even though not cleared to do so. Here the discussion seems to be becoming around whether, in the judgement of all parties (and how they are able to accurately judge that) a collision will not occur whilst carrying out actions up to the limit of that land after [non]clearance.
In my opinion a clearance to land will always be more safe, although I am quite happy to "expect late clearance". Land after, however,is going to make me work harder when I want to be concentrating elsewhere. Perhaps it is, though, just down to my level of experience, which is not high. Having said, that perhaps we become more
blasé with the passing years.