HD, with the greatest of respect, that is pure BS.
If a pilot checks in and says "squawking Ident" on first call, and I can see that the radar return is flashing in association with the correct code/callsign conversion and in the right area, then as far as I am concerned (and Mats Pt 1 for that matter) then we have fulfilled the criteria for identification using secondary radar.
I have heard pilots getting an ear-bashing from colleagues that don't like them identing before being asked, then asking them to ident again... This wastes RT time, which in the TMA is often at a premium anyway, and serves absolutely no purpose whatsoever.
By far the most annoying thing that pilots do, or don't do as the case is, is report their passing and cleared altitudes. I HAVE to check those, and that leads to a hell of a lot of wasted time.