no, I know people who wash their harvests every time. might not even be a bad idea. ever look at your stink sock? the prefilter gets dirty aye? imagine how much of that dirt sticks to your produce? if drying in a controlled room like we do wet buds wont be an issue.
those crystal heads, called trichomes, are made of wax and contain the active ingredients we seek. careful water dunking wont dissolve wax. yep, could knock a few off, so what, I got plenty of them . many get damaged when you sniff, or bump, or walk by and stick too a plant, or during trimming too. no worries.
i havent washed my buds yet, but might try just to see what kind of debris is discovered....could become a part of harvesting for me maybe....