Fast Erect
As you are aware, the IAS at which an aerofoil stalls varies with angle of attack and G so therefore a caution for PPLs who are taught "stalling speeds" and maybe want to "try out" a VRIAB is justified in my opinion. However as I said before, I recommend that pilots do not attempt a VRIAB unless correctly taught and demo'd.
...your completely unneccesary and pointless r&b manoevre in your Yak 50.
Not really pointless as it was good to maintain currency between leaving the military and now routinely operating formations around the bazaars.
I have never flown a Yak 50...maybe a little more research and mature conversation is in order before you wade in with your big w*nky boots?