Hello there,
theres no irresponsibility, nor unreliability. I understand being mad for the change of dates, but there has always been a release, which is completely free and with lots of content. There have been mistakes on release dates for sure, and one of the causes for this is the constant asking for a specific date when a range of months was given (which is a lose-lose situation regardless, since otherwise then users just say they are being ignored), this was already covered in another post. This is a really small studio, and only one person works on the game all while keeping all content free.
Making the comments you have while also demanding a specific release date is a complete wrong behavior.