Wait, is it legal to distribute the Touhou games?
ZUN honestly doesn't care about the fact people are pirating his games.. as long as they don't go throwing out ending details left and right without you having to beat them (Which caused plenty of mixups about Eirin during TH8 [come on, why did an emote try to render here..?]), and most people have respected that
The ones that are spin-off games (Megamari, Super Marisa World, Touhouvania for lack of a better name, etc), I don't know about at all. But considering it's somebody else who asked ZUN if they could use his characters in a game other than in his main series, I'd guess.. really, I don't know. But they're like $20, y'know?
With that said, there is no reason why Reimu should be using a chain instead of her miko thingummy.
It is actually her gohei, modified to have a ton of paper bits linked on each other to function as the token Belmont whip.
Also, it appears to be rather inaccurate because if it was the Scarlet Mansion, those beasts would be universally female and cute.
There are plenty of non-humanoid female youkai in Gensokyo. You just never see or hear of them. Mainly since they'd all be generic fodder and not note-worthy at all. Keeping all the visual enemies as nameless fairies keeps within the game's style. To be fair, later into the game there are plenty of nameless fairy maids acting like generic enemies, but it's mostly devilish youkai and whatnot.
Oh, also, there was no reason for the patch download link to be removed, as the patch was put on the maker's website to fix up some gameplay issues they couldn't address for the C76 release and would otherwise bust up the filesize even more. There's nothing about the full game in it. But that's not my call to make, y'know?