Ask HN: Are the tech levels now diluted post-pandemic (Google/Meta)

I am curious compared to the pre-pandemic levels, how diluted the level bands got nowadays. Any Googlers or Meta engineers around here who can answer that?

For example, does the average (p50) L6 engineer in 2019 vs 2025 still present the same level of rigor and experience? Or what bottom percentile of an L5 or L6 level accidentally get hired/promoted to that level (used to be <p10).