Anybody who is on linked in and puts a lot of effort in their profile are cheap replaceable labour in my eyes.
If you think you are a special unique snowflake that is irreplaceable, think again. There are a few handful of individuals in the entire world that might be exceptions to the rule and those people are not irreplacable because of their knowledge or talent but because of their charisma and vision.
If you have a special skill or knowledge or talent... someone else has it too.
There's no relation between updating the profile and being replaceable.