I don't think its the cooler temperatures that prevent the blasting. I think its the constant air flow around the plant, which does two things I believe:
1. prevents water from rotting plant (dries by night time)
2. prevents stagnant stale air around the flowers (different gases like ethylene may blast buds)
My small cool area is 15C nights, and 22C days.
Maybe Theresa can comment as she is a fantastic grower.
Based on the habitat info, and how other people report their success and failures with regards to their growing conditions, I do think it is the consistent cool temperature. It is necessary for the spikes and buds to properly develop over the span of several months. Severe dryness between watering may cause the spike/bud to abort itself for an obvious reason of water conservation and survival mode, and this is true for many plants in general.
Air is the least important part in my opinion. I grow indoor and I don't run fans for plants. The air constantly moves around due to temperature differences (warmer air rises and cooler air falls) even if you may not perceive its movement. I do agree that gently moving air benefits plants in a few aspects but I doubt it is as crucial as it is commonly mentioned in typical orchid care instruction. Otherwise, I would have bud blasts all the time, but I rarely have such issue. I rarely, if ever, have rotting issues, either, and I water by pouring all over the plants. not all of them, but most of them. and all of them have water poured on them every now and then just so I can clean the dust off the leaves and stuff.
For me, bud blasts happen mostly with just certain parvis, namely armeniacum and micranthum and its hybrids like Fumi's Delight.
Delenatii and other parvi hybrids have been blooming fine for me. Delenatii among parvis come from area with warmest "winter" temperature range. So this is again, consistent with what I said about temperature above.
Other plants do perfectly fine. Phalaenopsis, Oncidiums, Paphiopedilums of all kinds, Cattleyas...I rarely have bud blasts if ever. The only thing I can think of that is vastly different is that parvis come from area where the temperature is mild year around with winter being cool to cold (even slightly freezing at night). This cool winter last for at least 2-3 months.
Armeniacum comes from the highest elevation among the parvis followed by micranthum. Two most troubling ones for many people.
I've had a bunch of armeniacum form sheath/bud and eventually blast after a few months. I've had more success with micranthum and this species has a very wide distribution in the wild. I have even less problem with malipoense although still not that easy. It is simply too warm in my apartment for this species to thrive and bloom well. Last, delenatii, as I have already mentioned, remaind old faithful.