Don't get me wrong, I'm all up for more content for kp. BUT that is only because I am a big fan of it. I got something around 300+ hours sunk into current versions of the game
But at the same time having a finished product is really important for indie devs (and imho probably for any devs) cause each next month in development actually brings less and less new people to the project and at some point old fans might start leaving it, with phrases like: "What, its still being developed? Half a year to add just another side-job? I see, just milking patrons..."
Adding more and more content is nice and all, but it sure has diminishing returns, and I think Rem understands it quite well, that is why he always says that they got a plan and they are following it.
Obviously they might do a couple of dlcs after full release, if some specific content still gonna be in high demand, and won't require a ton of time from them.
Setting realistic goals and following the plan is better for the game than infinite development that just make the game more clunky with each next update. Fans are cool and stuff, but majority of your consumers are casuals, no matter what you do. And casuals need a finished product and possibility to beat the game in some reasonable time.
Like, take Steam with tons of devs following infinite development route with excuse: "we are in alpha, you have been warned". Any good games you can name that are doing that? In my experience best games that started in alpha state were released after 1-2 years of dev time. If it takes more, interest to the game dies, and with consumer interest, dies Dev interest in their own game as well. Updates take longer and longer and bring less and less content...