I find this whole concept absurd!
Here's a guy flying a heavy metal plane in RPT Ops in IMC day in day out OS in most likely conditions we never see here in Lah Lah land (OZ) & is obviously current & hopefully proficient & yet to retain his Aussie IR he has to perhaps reval it via some now considered antiquated outdated old piston twin for raw flying abilities when he's probably never likely to need them again & even if he did he is still in the eyes of our ridiculous rules makers 'current' right up to the day b4 the rating expires having not been back in the machine from the day after his reval!
Madness!
Just flaws me in this day & age but I guess we need stupidity in all levels of officialdom!
Wmk2