On the developers Patreon website they have a Poll up:
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That is technically asking the paying fans for what story to work on next... Therefore it is giving some creative control over story flow...
As to the rest of the post, it was a generalization of what tends (not always) to occur when too much creative control over any aspect of a story is given to a minority of the fan base... Will it end up being detrimental? Maybe No, Maybe Yes... But I was generally speaking about the trends we've all seen in the past when any form of story control is handed out, rather then strictly controlled by any given developer... Who knows, it may have no negative impact what so ever in this particular VN/Game, it may even become a boon, no telling till it happens...
I just feel saddened when I see any story flow/concept/plot/etc. being offered up for a paying fan base to have any say about it... Usually the best method for giving paying fans a sense of involvement in the development process, is voting on non-story related things such as the window dressing items that I mentioned before...
Buy hey, don't take anything I mentioned as mantra on what this particular developer plans to do or is doing... You may want to re-read my original post, as it was a general talk about trends when any developer offers up creative control over the story in any form...