The intention was to provide a clarifying example of an existential statement that should be non-controversial (“There exist some people who are uncomfortable living a lie”), not to assert probabilistic evidence for a universal statement (“Everyone I have read about is uncomfortable living a lie, therefore this is true of all humans”). I noted the selection bias only to clarify that I am not making the stronger universal statement, but it doesn’t interfere with the existential statement.
The intention was to provide a clarifying example of an existential statement that should be non-controversial (“There exist some people who are uncomfortable living a lie”), not to assert probabilistic evidence for a universal statement (“Everyone I have read about is uncomfortable living a lie, therefore this is true of all humans”). I noted the selection bias only to clarify that I am not making the stronger universal statement, but it doesn’t interfere with the existential statement.