It's ultimately pointless to offer stretch goals, Selly's problem isn't what he can offer, it's accessing new potential players, he's only getting a small trickle of new eyes on his game since this thread got quarantined. His last effort to get more money was pretty much limited to his current patrons, and he can only squeeze so much out of them, the fact it was only temporary pretty much confirms this, once those who gave more saw the number wasn't increasing any further, why keep their increased pledge for no reward?
Selly pretty much fucked himself over, the game is still getting pirated as it was before his care package hissy fit and DRM revenge plot but now he doesn't even gain the benefit of advertisement from this site, not really, not by much, the occasional new subscriber willing to support the dev is counterbalanced by the slow loss in subscribers every dev suffers over time, people move on, pledge to new projects or their situation changes and cannot keep their pledges. His income has completely stagnated since the thread was quarantined and that isn't going to change unless some new website comes along that he can advertise through as he once did here, but why would that happen? For legit purpose there's steam (not an option) and to a far lesser extent, itchio, and for grey purposes there's F95 and a handful of other much smaller AVN sharing websites, the only prominent ones also having piracy.
The fact he tried to squeeze more out of his current patrons shows he has no other options and no ideas and whatever he has tried hasn't worked. Around 10k is what he's got unless something significant happens, speculating on what is pointless as any idea anyone can come up with is either a dead end or predicated on variables not present at the current time.