If you filter by "New Offers Only", you'll see a pretty sharp shift in the trend starting around October 2021.

Same with Uber, a notable uptick starting late last year: https://www.levels.fyi/company/Uber/salaries/Software-Engine...

The top of the band has probably gone up more than the median offer, and most companies didn't increase their bands by that much (yet). This is definitely a case of "the future is here - just not evenly distributed yet".