Well, you could argue that Widow isnt supposed to have an easy time escaping people that have snuck up on her. 2 seconds more isn’t a lot, it will make a difference, sure, but it was in my opinion a good change.
You will need to be more picky about when to use it, think about your positioning and be aware of enemy movements, so you won’t get caught with your pants down.
Having the hook on low cooldown kind of eliminates her one weakness, which is mobility (and then close proximity fighting, which it indirectly eliminates when repositioning).
Widow isn’t supposed to have a high chance of surviving a chaser like Genji or Winston (Come on man, these are supposed to be her counters!). You get one get away card in the form of the hook, but then if your team isn’t helping you and/or you miss that following shot, your chances to live are, if the opposing players are atleast mediocre, pretty much none.