What prevents title changes if only to please the LinkedIn profile? Junior - Senior is a change that occurs within the first 5-10 years. Isn't there a way to discuss with your manager for title changes just to show you haven't been doing the same thing?

Deputy Developer? Elder Developer? Doyen of Development? Development nestor of company X? Director of Engineering at Sub-sub-sub-sub-department that happens to be just your team? Level 20 Wizard? Does it even matter if it sounds good on LinkedIn?