I have already taken my time to try and come up with a response fit for this, but somehow I couldn't manage to put my thoughts into words properly. if ever I come off as rude or anything similar to such tone from this point forward, know that it is unintentional.

are you sure that I am the person you're actually wishing this for? although it doesn't make it any less concerning if it's for someone else—but I am just confused since I haven't been that much active for a while now. so this, to me at least, does not make any sense.
telling someone to "disappear", no matter what the context is (and especially if you're not even close to make such statement to the said party) does not sit right with me. sure, let's say this is for me. why did you feel the need to involve me with things I am not even aware of from the get-go? I do not know who you are nor do I know that crush you're pertaining to.
do you also think that you'd stand a better chance if that said crush of yours somehow sees and finds out this is what you do behind their back? do you think you're much fit for them now that you wished someone such horrid message?

I do understand that you feel helpless, and I have no right to invalidate that feelings of yours. the action you made in regards to that said feelings is the thing that did not sit right with me. but if you feel better after telling me this, then I guess you're welcome.