I have said it would have been nice to be closer to the books. So it is weird for you to continually interject your own arguments just to state you disagree with your own inventions. Just because a show has $10 million an episode in the budget doesn't mean they have to spend excessively. They still have to budget and find ways to cut costs. Spending less in some areas, like a sword that is rarely unsheathed, means they could spend more in other areas.
It plays a significant role in the books. Not the show. It has already been established that the show is not a faithful adaptation so continuing to apply "faithful adaptation logic" to things is silly at this point.
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Discussing book events can still spoil the books. If it is something that happened on the show it doesn't need a spoiler tag because the show would have spoiled it already. Since the show diverges it means that a lot of stuff referenced from the books should be spoiler tagged.