“I’ll say nice things about your workshop / coaching if you spare me the pain in learning about myself.”
I was reading an article, and there is a line like above (I modify it a bit).   The collusion we can get into unconsciously….  e.g. probably simply with an exchange of eye contact and smile.  The question is ‘Am I colluding?’   Or I should say ‘To what extent I am colluding?’   I think it is an important question to reflect on from time to time.  This is for everyone who is in the business helping others develop.
On further reflection, I think practitioners can hardly be totally free from collusion (me included). The key is however how willing one is to self-examine the question and have partners to remind each other from time to time.