Unless you are in the business of building client libraries for Ads API (and I don’t know anyone who actually is), you might be tempted to write your own client library. After all, it is as easy as sending a request to an API, your engineering team might say. And once more, you are creating another mini project, with its own technical debt, that eventually you will need to put the time to maintain. For more than 4 years people were contributing to this Facebook Ads API python library, and the same goes for this Google Ads client library. You can be 4 years late on the game, or use it as a leverage to build on the top of it.