Second part is actually correct - you have to change your way into how SAP works, its just a typical crappy legacy rigid mammoth software that requires overpriced army of devs/analysts, not much more. If it would be marketed that way, they would go bankrupt very quickly because no company willingly wants to do that, and certainly not at that cost.
But anytime some c-suite manager picks up SAP, you can be sure there were some nice meetings done in ultra luxurious places and more often than not some bribes went that way, in one form or another. This is the way, if your system sucks so much it destroys companies
The drive to ERP is understandable. The issue is that homegrown solutions suck too - most businesses aren't IT companies and can't properly maintain a custom solutions. Using a third party makes sense, and allows you to hire outside devs with experience. SAP is however usually not the best solution...
By the way, edge cases, if if they work in a legacy system, are a thing to get rid of during a SAP / ERP implementation. Most people see ERP systems as IT projects and fail. ERP projects are at least as much business reengineering projects as they are IT projects.