Ted ends his relationship with Zoey, and the audience is more relieved than sad
Since the beginning of How I Met Your Mother, co-creators and college friends Carter Bays and Craig Thomas have always taken on the task of writing the important episodes. This means they write the season opener, the season finale, and a few in between. Bays/Thomas episodes rely heavily on sentimentality. They usually give minor hints about that pesky mother question, but always involve Big Life Decisions, like Lily leaving Marshall for art school at the end of Season 1, and Robin and Ted breaking up due to irreconcilable life goals at the end of Season 2. In these types of episodes, HIMYM is surprisingly effective at conveying the sense that something is truly at stake—that the decision is a difficult one. But in this week's episode, when Ted chooses his career over Zoey, Bays and Thomas fail to elicit any emotional impact because of one simple flaw: we were never rooting for Zoey.
A public hearing to review The Arcadian's proposed landmark status sets the stage for this decision. Zoey and Ted have been wafting along in their relationship, choosing to ignore the glaring issue that Zoey wants to save the building that Ted is obligated to destroy. At the end of last week's episode Ted grandly announced that he'd cede his position for love. But in the days before the hearing Ted realizes a few things. In the short term, it's not only his job that's at stake, it's Barney's too. In the long term, and perhaps more importantly, he'll likely never fully recover from giving up his dream project of designing a Manhattan skyscraper, and this regret will plague any chance at a healthy relationship with Zoey. When Ted is called in front of the review board, he votes against her.