One should never offend carelessly. It should always be with full intention 
To clarify, I’m not against paying for additional content (i. e. expansions) or for slight perks (the WarningSys in Hero Project).
What I am against though, is Day-1 DLCs (or in this case, IAPs) that include (more or less) significant parts of the story.
This feels as if content that should already be in the finished product is deliberately withheld from me in order to compel me to pay another $1 (or whatever the rate for IAPs is).
I didn’t follow the thread for CoR, so I can’t say anything about how many people took issue with that or what was discussed about it, but I dare say that this sentiment was probably shared by those who took offense at that IAP option.
For me, it’s probably the mixture of “relevant influence on the story” together with “Day 1 IAP” that evoked that negative feeling.
To get away from the example of CoR, let’s make a comparison with some other titles:
Did you support the Day-1 DLCs for Mass Effect 3, Dragon Age, Assassins Creed 3, and whatnot? They all are additional content in their own rights and they offer further gameplay and/or slight perks. Sometimes they are already on the disc for the game you aquired and it’s simply not unlocked till you pay for it. Sometimes they even give it away for free as a Pre-Order Bonus.
I know I don’t. I’ve never bought them and I’m not planning to do it in the foreseeable future (though I still buy Bethesda games, and I’m eagerly awaiting Dragon Age 3 next year).
Opposed to that, I did buy Dragon Age: Awakening. It’s additional content apart from the main story and offers significant gameplay. That I do support.
To get the curve back to CoG games: I don’t like it when it feels like there is content missing right off the bat. Later expansions or small parks that don’t change the story itself? I’m okay with that.
For Choice of Rebels: I obviously don’t like that Tax Collector part. But if you offer a part along the lines of “You had a private Teacher during your childhood”, which in effect gives your starting stats a boost, I’d be all for it.
On that note, I do concur that the CoG games are almost laughably underpriced. But I don’t think charging extra for some of the storyline is the way to go.
And trying to hook the player to get him to pay for the full version… well, that’s what free demos are for.
I believe Cataphraks Sabres offers four chapters as a demo? Out of eight? (Though I never actually played the demo since I bought it outright. I only remember it from the thread when it was discussed where to put the cliffhanger).
In that regard, I recently gave an opinion at Cataphraks thread where he asked about what game he should make next. During the discussion he mentioned a major game with three different fiefdoms, each offering a different experience, that would be a huge pain to write, especially when it’s unclear if it will be a success or not.
For this instance I recommended just starting with one fiefdom and, if it is well received, to only then write the other two and offer them as IAPs (just to outline why I’m okay with that: Adds a different storyline, does not impact the experience from the original basic game).
On a side note, that part about boycotting future releases refers mainly to AAA-titles on gaming systems (for example, I have a strict policy not to buy any single-player game that requires me to be continuously online. Yes, I’m looking at you, Diablo 3. In the same vein, I won’t be getting a X-Box One because I refuse to support their concept of “stalk and harass the players as much as possible”. I can’t give any examples for Indie-Games though, since as of yet, none of them have crossed that line whereupon I see that as warranted
).
Also, as far as Chrome is concerned, in my experience the IAPs are usually made available for free (at least it was that way with Hero’s Rise and the soldier background in Zombie Exodus), so the users wouldn’t actually miss out on the content, but you wouldn’t get paid for it either (unless of course, we come back to my favorite model with the higher price up-front
)