I totally agree that most web pentesters don't generally need to know how buffer overflow and binary exploitation techniques work but I think an understanding of how low level systems function and how they can be exploited is useful across all security sub-fields.
I don't think Offensive Security is trying to pump out exploitation experts from their entry level cert program. Maybe the higher levels OSCE and OSEE. The intro cert emphasizes breadth over depth. It felt a lot like a cert built around the Exploitation Hackers Handbook.
I think you're thinking of the certs in the wrong light. They are meant to validate baseline knowledge and proficiency, not mastery. If you want to validate mastery you need to look at the persons personal record and work product.
I don't think Offensive Security is trying to pump out exploitation experts from their entry level cert program. Maybe the higher levels OSCE and OSEE. The intro cert emphasizes breadth over depth. It felt a lot like a cert built around the Exploitation Hackers Handbook.
I think you're thinking of the certs in the wrong light. They are meant to validate baseline knowledge and proficiency, not mastery. If you want to validate mastery you need to look at the persons personal record and work product.