While this is true, the implications could be far reaching for companies here in the US
Since Apple has instituted their "walled Garden" approach to all their software and now Microsoft is doing the same with their software, it would open the door for more litigation against both companies as "monopolistic" if Yandex were to prove its case against Android.
The interesting question then becomes, if "monopoly" means not having choices once you've selected a company's OS (meaning you have to use their apps, their browser, their API's), or is it irrelevant since you do have a "choice" to go with whatever OS you want to use to begin with?