The critique that games are too long is not really opinion. It's pretty much fact. Your UX, your code, your novel, your script, your illustration, your logo, your speech, your /everything/ would almost 100% be better with less of it. I thought all creatives knew this.
Like, there are well known quotes about this. Here's just one that I happen to recall off-hand. "Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away." - Antoine de Saint-Exupéry