In terms of what they do with big data there's more evil parties like Palantir but data abuse starts with collecting it, and I would object to it even if Google promised to only use it for good. For me my privacy is already violated when my data is collected, not just when it's abused. And I do consider Google's use of that data abusive, just not in the worst ways.
I've literally registered a Signal account on one of the free SMS sites floating around. Why would spammers choose the payment route over phone numbers? They would just choose the one that's cheaper.