Yeah I completely agree with this. I would expect that any staminate flowers who aren’t mature when chopped. Would never mature. And never produce as much pollen as if you left the whole branch on the plant.
And yeah I’m not a huge fan of the pollen mixed with oven-baked flour. Have tried it a couple times and it just seems like an unnecessary vector for mold. Plus I’ve never collected pollen on a scale to justify cutting it. I usually just keep the male alive until his tour of duty is complete.