Why is Vantage so hated

There are a lot of legend choices I would question before I questioned Vantage. I'm far from a professional grade player, but I have to imagine that when they're looking at their squadmates they're probably asking, "What is my squadmates' legend doing for the team?" Which explains why so many people think Lifeline is indispensable while I think she's utterly useless. If I had to play her, with no worthwhile mobility to speak of, I'd be dead in no time. And I honestly can't imagine going through a single match, much less thousands, where my only real utility is in bailing out my trigger happy teammates. And to bring that all back around... they're probably looking at Vantage and thinking that she brings nothing to the table in terms of helping out her team, especially when the typical player is 100% about run-and-gun close quarters combat, where, you have to admit, she really doesn't get much chance to shine. She's primarily good for mid- to long-range recon and poking. None of the adhd kids in this game have any use for mid-range pokes. That's not how you get downs or kills or good YouTube reels. So you and I are pretty much at odds with all the other players in the game. Well, that's my guess.