That is straight up MOLD! Even with the bad pic quality I could spot that a mile away. Bloom is not generally that pronounced and in giant clumps like that. I say find a new B&M and wave audios to that one. Shop owners always favor for "bloom" because they don't want to admit that they have no idea what they are doing. The first thing I thought when I first saw bloom on my sticks was "holy s**t I have mold, my sticks are ruined" which quickly turned to "maybe its not mold" If the white spots on your sticks make you second guess what it really is, it is probably bloom and not mold. Like stated above it should be easily wiped off and leave no trace on your sticks now, if your B&M's walk in has that tell tale "smell" that something might be "off" it probably is. A walk in should smell like fine cigars without even the slightest hint of "mold"