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This is no doubt by a very amateurish translator. Who could that be?
Speaking of amateurish English skills (from FS Chapter 7):
If you look at the context of this tweet, you'll also see that ZUN posted it at 5 AM, when he was drinking at home alone. After posting it, he looked at twitter, saw that Brazil had a terrible first half (he doesn't like soccer, so he's not actually watching World Cup), and went to sleep.
In summary, what we can deduce is that ZUN is translating the config program all by himself. If he had someone else localizing his game, there's no reason he shouldn't let them translate the config program. The implication is that he's not going to rely on outside translators at all. Given how limited his English skills are, the game's main contents cannot possibly get translated.
To take it further, I'm going to make an educated guess: he is not going to rely on any existing download platforms and localization companies. Instead, he will set up a website by himself, put the download version up, and add some payment interface like PayPal and Moneybrookers. Posting the image means the release date is already quite near; he might even open the download site before Comiket 86.
The reason? ZUN values his own independence above everything, and would prefer to not let localizers meddle with his games. He has expressed his distrust with the localizers, saying: "Can you translate better than my fans? They are super hardcore!". On the other hand, I've kept close watch on the localizers, and none of them have shown any signs they are in the talks with him.
In the end, ZUN's plans seem to be exactly what Clarste and Drake said - release the game with a basically functional translation, and let the fans deal with the rest.