They're not looking for an actual researcher plain and simple. If you want to pursue an actual researcher career don't apply here it'll destroy your career.
Look at all the other legitimate researcher job posts: they're very specific in what kinds of statistical analysis programs they want you to know, the kinds of experience, etc. Why do you think Riot's job posting is so broad? Because you don't actually need to use those kinds of programming and analysis skills. Why? Because they're not actually looking for a researcher.
They made me go through several interview rounds, courted me through to the onsite. It was there that I found out just how toxic their environment was. From the very first "interview" I was told about previous employees that had been let go and disparaged, which should have been an enormous red flag. The more I spoke to them, the more apparent it became from their questions that they wanted someone who could justify with """"science"""" their bizarre business changes: I include quotes because at one point I was told that they are looking for someone who could spin a story that goes along with sponsor requests even if it went against the insights gleaned from objective numbers. I was rejected pretty much immediately when they realized I would never bs data for them. How do I know? Because that was the feedback they gave me. They literally told me that I was great on all counts except for that point, and that I was encouraged to apply again in a couple months when I learned to answer that question correctly (which just feels morally skeevy).
Laughable that they say that they're a company that prides itself on being player driven. No, they want people who are 'researchers' to make it seem like they're making decisions based on statistics, player outcomes, and player data to shut everyone up and justify profit driven schemes.
It wouldn't be so upsetting if they were at least up front about being a company that, you know, doesn't put players first. I used to love league. I went to their campus excited about what they stood for and left disappointed (but relieved after all of the recent dirt that's been surfacing) at what I saw with my own eyes.
All that said if you want to tell people you're a researcher but don't actually want to do research, this position is probably perfect for you so have at it.