I agree.
I would hazard the primary purpose of an SRA is for when the G/S fails or there are some other technical gremlins.
Whats the difference between a mechanical failure and a human failure. If the pilot goes a bit flaky its every bit as much a good reason to request an SRA.
What are "they" going to say. A bit more training is required Sir.
There are plenty of cases where even very experienced instrument pilots have come unstuck on the approach with a touch of the leans, spatial disorientation or some such nasty. Haven't we all had it at some time, its not pleasant and if you realise the work load is getting on top of you its time to declare the human machine has thrown a wobbly!