How many BC collectors do you know? A blanket statement like this indicates you know several personally.
You also don’t provide a location. What “Central Park” are you talking about? NYC?
Seems to that Recommending people “dig their own” can lead to the very unethical activity you mention.
Also you don’t really seem to have a grasp of how BC bonsai are developed. Existing branching is not really used in final designs. Pics of trunk chopped BC bonsai are below. Some were chopped as long as 40 years ago. They are vigorous healthy trees and have bee for quite a while.
Do you have any mature established BC bonsai?
This information would go a long way towards validating what you’ve observed
FWIW I know several BC collectors. Some for decades. They are ethical and take their collection activities very seriously. Some have been collecting and selling for 40 years.
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