He writes the note thinking people see it later after he leaves the community.
‘There will be no better player than me and at least within 10 years. Form is temporary but class is permanent. I’ll come back to community someday like nothing happened. We will meet again.”
Then he thinks that if people feel sadness, then it’s theirs, not his. He doesn’t have to write such things hoping they miss him in the future for his absence. He should just remain everything the way it is.