Nobody is saying he should throw endless money at it - but he should invest something. Retaking a regular pre-season loan and having a negative net spend isn't exactly encouraging is it?
As said, if that loan is contingency for the stadium, so be it. But it's the same loan on almost the same exact date as last season, so you have to expect it's just the same thing. If so, that means Moshiri has no interest (at least at this time) of clearing our debt, and the transfer window at least raises the massive suspicion that he has no interest in investing in transfers either.
If that's the case, then what is he here for? The answer would be obvious - a business decision to make money, just like any other businessman who isn't a sugar daddy in the Premier League.