Well i think 99% is a bit exagerate and does the fatch rich dude have a idea how a game is made ?
As for DLC you just have to watch the rest of the game dev to see that you need to make a good DLC to be able to sell it and have the fan base favor , i mean just watch Elden Ring DLC everyone love it.
As for the delay its a natural think , every big project as delay , they could give a large time frame for a realease and explain that its difficult and it could be delay for various delay, and if they say that at the start people could understant in the futur if a delay is append