At the end of the day, there are still uncertainty until we see announcement and things come along. The recent could be
1) luck
2) friedcat is testing 'sample' miners
Even if things look good, there's always potential for operational issue as you do not control the manufacturing & assembly plant.
Four blocks in 24 hours is consistent with a hashrate of about 500TH/s.
If this is really the case, and not just extreme luck, then the "sample" is about 40000 gen3 chips. Quite a sample!
YEP 500 TH/s or maybe the chips are better than advertised and "under promise , over deliver" is still in progress