As far as I can determine, there is no good reason for the cut on payments.

Medium has private investors. So, it is difficult to find exact information about them but I found some. Medium's official name is A Medium Corporation.

https://www.crunchbase.com/organization/medium/company_financials

According to CB Insights, Medium has raised a total of $132.3 million in funding over 5 rounds. The latest funding round was on May 1, 2017, and Medium was valued at $600 million. However, I could not find any recent information on the company’s valuation.

Medium has acquired 8 companies between April 2013 and November 2021.

A little more info to check.

https://app.sensortower.com/android/publisher/a-medium-corporation/A%2BMedium%2BCorporation#:~:text=A%20Medium%20Corporation's%20Publisher%20Summary,and%20200k%20Android%20app%20downloads.

According to Wikipedia, Tony Stubblebine is the current CEO of Medium. He took over as CEO on July 20, 2022, after Evan Williams stepped down and transitioned to chairman of the board on July 12, 2022.

I don't know if this will help in any way but you can look it over and maybe write about it.

Love you back girl.