I strongly suggest that you read more carefully. No one has fretted over IBIS, merely asked questions about possible long term alignment issues.I'm not sure about "bad light," but it is a little early to be fretting over a feature that promises improved control over camera shake, while at the same time scolding those who want IBIS. Such naysayers, sounding like Eeyore from Winne the Pooh, are entitled to a "spot light."
I've paraphrased, but the above sentiments have been expressed throughout this thread. Please go back and read the thread and you'll see examples of each. I'm surprised, even scanning through, you didn't catch them.
No one has scolded those who want IBIS. What people have mentioned is that in their experience, or in the experience of some photographers, IBIS on a FF camera may not be as effective as those who champion it's wonderfulness believe. People (like me) have said that as long as they have lenses with IS, then IBIS is not necessary. That doesn't imply it won't be necessary for others or that it won't be beneficial to everyone.
I don't believe that you are intentionally inflaming the issue, but like many forum members, your posts often tend to exaggeration and misinterpretation.