Are engineering contract managers and green building consulting engineers reliable? Is it like the sales course said?

When the first-class construction engineer first came out, there was a clear document stipulating that the project manager system should be abolished and the construction engineer system should be implemented. Not many people are optimistic. This is not good for people who don't understand engineering, is it? There are so many kinds of certificates now, where is the spare money and time to get them? In the end, the market didn't recognize a piece of waste paper bought for thousands of dollars, so there was no room for crying.