you are very wrong on what you are thinking, contributors can translate the project in github, but they have the rights when to make a pull request,

Thiago has entrusted us to translate of his project, I guess if you want to find a fault on moderators not on the time of PR because its not making sense as the image below are showing,

Thiago knows that moderators will not give a translation that's not accurate, so if you want to find fault, its not about how many PR's the time of PR's was merged or requested, but you should check if the translation that this moderators/contributors did is not accurate. :)

Again contributors can translate the whole day, and they can submit the pr with the same time, or the time they want to make a pull request of it.

You can also find my PR and make it your next post ;)