I like to advocate against using placeholder texts most of the time. The problem is often that designers/developers have to create a page with some content on it, but they don't know the content yet. They know a bit what it's about but the real texts on the page are not ready yet. Then they use Lorem Ipsum or something else.

This is wrong from the start. Before designing a page, you should know what the content is gonna be. The content should then decide what the design is gonna look like. Essentially, content is part of the design.

Designs that used placeholder texts like Lorum Ipsum can also fail, because the real texts turn out to be much shorter/longer than the placeholder text. Or the text is really something else than the designer/developer expected. Or the designer placed some cool text box somewhere but nobody has an idea what kind of content they should put there. This often results in useless texts appearing on the page because the design demands it. Or the other way around, the product owner wants to add a certain text somewhere, but there's not really a place for that in the design, often resulting in an ugly/quick fix.

In the end it is all about the content. The design is to complement the content. So I think generally the best approach is to start with the content, then create a design to complement the content.

Of course, in some situations it's not possible, but if you can, start with the content!