It's a matter of bias, that's all. The people who were following the kickstarter got to learn about the stretch goal. Those who heard about it, decided they'll wait until October 2016 when the game comes out, and ignored the kickstarter have no idea about the DLC. They have postponed joining any community and/or following the game's progressive to sometime in the future, that is all.
Now, when they join the community, it may be too late for anything they have to say to influence what Playtonic says.
Does that subset of people have to wait until post launch? Not at all. I'd see joining anywhere after a year from now would be rather late in discussing what Playtonic should do regarding DLC. But it appears that if anyone of the subset of potential players of the subset of those opposing paid DLC of the subset of community participants of the subset of gamers would want to join the community and dare speak ill of paid DLC, you would harass them to no end for having a differing opinion.
Right now our community is composed of potential players of the subset of those who have a some reason to discuss a game 16 months before it comes out of the subset of those who heard about Yooka Laylee of the subset of gamers. It just reeks of bias to extrapolate this population as representative of the entire gaming population. If you were back in Britain in the year 1000, would you have expected people with skin colors much darker than your own to exist?
I can respect and say that us not knowing what the DLC is nor how much Playtonic wants to charge non backers, and backers, for the different DLC packs are valid points. Also the fact that Playtonic has so many years of Dev history behind them in creating a game, and some of them with history in DLC, that they should be able to do something good. This of course is based on speculation.
I would just like to see respect to the ideas that starting out with DLC on the first title, extending time until following games can be released, and coming to find DLC to be your money maker by overpricing it would be bad for an Indie studio. Also that there is potential for a community divide and it is not based on pure imagination. Most of that is of course based on speculation.
Woaaaah, it finally came out!