To me, they can keep what they've already got from me, they just won't get any more directly from me- I don't trust them to honour data deletion requests properly anyway.
I've already deleted my account, and never put a deletion request beforehand. And from what I hear you have to do it before you delete your account for them to even give you a chance of honouring the deletion request.
Reddit if the people running it were honest: "We are in the late stages of massive irreparable failure at our own hands and now need to blame everyone else while scrambling to push water uphill."