I believe it's pretty much a shill.
Although the process of the rating was based on number of new wallets download which to.me may not be accurate for this kind of rating
I can't even find any mention regarding how these statistics were collected, and for sure there is a lot of uncertainty in this. Measuring adoption solely based on the number of downloads per wallet is shouldn't be concluded, what it means by adoption does not align with download. And if the detail of the data in this particular case doesn't exist, well it's pretty much a made up number.
After all, we'll surely get a better insight about adoption if the data are based on on-chain data.