These are pretty strong words to use here. Of course every writer want to push their favourites (it's natural and there's nothing wrong with this as long as it's not done at the expense of another) and I honestly don't think what happened to Jason in pre-flashpoint was the result of "toxicity" because I actually believe that it's a case of writers not excatly sure what people liked about him and which way they should go with him.
And I'm also not sure why some of you here acting like Jason is in such a horrible place and what did I miss excatly? He had a book consistently for 10 years which more than a lot of DC characters can claim (let alone the majority of bat characters) and he is slowly having a strong media presence that one can argue that he is becoming the most popular Robin nowdays.
As for the importance of DITF and its effect, some of the people who are upest about his return don't care about his death because he means nothing to them and it's just a statue que they don't like to see it being changed. To people who care about his character, his death become important to them and its effect matter more now that it ever did before.