The S&P committee never said they would. Space X asked and the committee said no. They should not have asked.
It went through the formal process to adopt. Almost certainly public discussion online had an influence.
No, but they did hold research sessions and they did draft the policy and the rules and all the updates and have them go through legal... they were planning to, until they saw public sentiment, or other influence. It'd be misleading to claim it was never a consideration.
#1 rule of sales. If someone is trying to sell you something, you _probably_ don't want it. Eg, they need the sale more than you do.
The very fact that they were asking the question is such a huge red flag.