How are stock brokers' order routing reports useful to the retail investor?

The SEC requires stock brokers to regularly publish an "order routing report" ^†. I see that Robinhood has published its report for Q4 2020: RHS SEC Rule 606 and 607 Disclosure. What are retail investors supposed to do with this information? Is it useful in any way?

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^† References: 17 CFR § 242.605 – Disclosure of order execution information, and SEC Adopts Rules That Increase Information Brokers Must Provide to Investors on Order Handling.