Tracking metrics on an individual user and hard-coding them into the source is the cringiest, most insecure, egotistical thing I've ever seen

This looks like an experiment to measure the impact on code changes on the distribution of tweets of different user groups. (comment down below confirms it). Elon is a good candidate for the test because he is the most followed user, controversial and can provide consent to collection.

Yea, or because he told his employees to do it, sheesh