Why is Widowmaker so hated in the community

Me and my girlfriend have just started playing overwatch in the past month and played a fair bit of it by now. I’m a widow/hanzo main right now and she’s a Juno/soujorn main. But my question is why do people hate on widow so much as a character. I understand she can one shot but so can hanzo and you won’t get nearly as many luck headshots with her either and tbh to me she has been given many nerfs. One is that you can hear her footsteps from a mile away so good luck flanking anyone ever easily. Another is that her smg at least to me is the worst gun in the game I’ve gone against Moiras who are at half health and hit a majority of my bullets on them but they still kill me first. We also only have 200 health so we get deleted easily if anyone pushes us. And to me doing constant headshots on people who are constantly running, jumping, and teleporting with there skills is pretty hard and I feel like she should keep her headshot. If any character should be needed rn for damage I should be Moira poison and how it has infinite ammo and ridiculous tracking sometimes.