Again I say - All this "I don't want to be a commercial pilot I don't need an IR" is utter tosh. The standard that CPL pilots are tested to in order to gain the IR is the PPL level of instrument flying.
As I just said we must not get side tracted.
We should only be concerned with the evidence.
As I just also said the IMCR and improver route to the IR were introduced by men far wiser than us for very good reason.
If the evidence can be produced that the rating is unsafe or does not achieve what it sets out then let it be produced. I tell you it does not exist.
It is not an IR and it was never intended to be. It is what it is. It has existed in parallel with the IR and it has stood the test of time.