To be fair, you can select multiple chunks of content by dragging the mouse to select that content if you start the mouse drag outside the content... or perhaps somewhere else.

But I typically begin dragging from the text within a chunk or block (not sure what you call them)

So when I try to drag and select content from other blocks, if I started that mouse drag selection within the text of a different block, I can only select content within the block I started from. I don't know if that makes sense, so I'll try to elaborate. If you imagined my separated text paragraphs here in this feedback form as separate text blocks in capacities, if I started dragging my mouse to select all of the text directly at the "To" of the first word, or perhaps at the "be" (second word)... I am not able to drag the mouse to select other paragraphs like this current one. It only allows selection of the first block.

Maybe it's just me but it has a bit of a UI shock value to think the interface doesn't allow me to mouse drag to select all of the content.