Oh no, not the Va myth again! I thought that had well and truly been put to bed. Here is one attempt to do so:
Design Maneuvering Speed Limitation Statement Clean stall in a jet transport mmm! Hope it is not one where the certification stall was defined by deterrent buffet levels.
I would choose high speed buffet any day.
Anyway, as Va min is approaching 1.6 Vso - if you can fly at Va you are nowhere near "coffin corner".