Jico did a series of measurements, and define "end of life" as the point at which distortion rises to a certain % (5% I believe...)
Based on those measurements - Sphericals reach that point at 200hrs, elipticals at 150hrs and the microline types at circa 500hrs.
None of these are at the point of damaging the record - they are merely at the point where measurable distortion reaches an unacceptable level (according to one manufacturer).
Wear is also dependent on the condition and treatment of the vinyl it is being played on... the cleaner the vinyl, the lower the wear. Also if you opt for a lubricating vinyl treatment, it can further enhance stylus life.
Some have reported stylus lives of 2000hrs (line contact styli designs) ... but on what basis? What level of distortion was being generated at that point?
If a stylus is used until shards break off the diamond (not unusual for very worn styli) - then it becomes a cutter, and directly damages the vinyl on which it is used.
Where do you draw the line?!
https://www.jico-stylus.com/2019/07/elementor-9582/#:~:text=Product%20lifetime%20is%20about%20500%20playing%20hours.