Passed the AWS CSA exam today. I have no prior AWS experience, experience with any other cloud technologies and only used the Linux Academy course for study materials. So, I think that's proof that the course can get you certified.
With that said, it felt like there was a lot of material missing from the exam that was covered in the study material. The exam also went a lot more in depth into some areas than the material did. In other words, the material was too wide and not deep enough. Of course, this is just my personal expereince and may just be entirely up to my luck on the bank of questions I got.
In any event, I passed and it's all thanks to Linux Academy. :)