It would be possible to locally save the delete tokens of every image you upload, so that you can request that they be removed later. I don’t know of any clients that can do this yet, though (if someone knows of one, feel free to mention it).
@sjmarf@sh.itjust.works I'm told Boost does this.
If you want this to be fixed, please tell the devs on the relevant GitHub Ticket
For some reason they think I'm literally the only person who wants it? At least that's what they keep saying as the reason for why they won't work on it.