She means if pics are put in spoilers, there's a huge space (The same size as the original pic) reserved instead of everything being shrunk down to the one spoiler line. Spoilers now do not minimize the size of pics, so they can't be used to effectively conceal big pics any longer.
Original point for me, links don't open in a new target window or tab, but instead take the currently open window or tab (i.e. the thread you're browsing) to open the link. Tried adding "Target=blank" tags to links and it doesn't quite work right here (does on some forums with BBC).