That's acceptable. But no need to trash talk the dev while you're at it. Look at the comments. People are so harsh to the dev and they don't even pay. This discourages a lot of devs when these freeloaders talk shit like they're some important people. We need to stop bullying these devs and instead help them out and encourage them to put out more content. That's what I mean.
It's normal to have backlash when you make promises that you haven't fulfilled more than once. Problems arose at the last minute within the stated deadlines, and this has happened more than once. Some supporters may have made harsh comments out of frustration. We don't know who is a supporter or not.
Of course, those who play the game for free do not have the right to defame the developer. Also, it was written in some comments that they were impatient for delays. I do not agree. In this and some games, firm promises were made for deadlines. But more than once, excuses came up at the last minute.
Although free users have no right to complain, there may be those who put themselves in the shoes of the supporters when they read whether the developers have kept their promises to date. As I mentioned, if you miss the deadline many times, you will lose your trust. Whatever you do next, some people may not believe it.
Finally, DarkKaiba666 offered to do the coding for free. He stated that this will take at most one day. KoL could have informed his coder that they were too late, that he was a volunteer who wanted to do this for free. He could also continue to pay his own coder.