I mean, it's fine if one is personally satisfied with not explicitly having evidence of the specific alleged data collection here, but speaking from experience

I mean, it's fine if one is personally satisfied with not explicitly having evidence of the specific alleged data collection here, but speaking from experience when the time comes and people inevitably prod further for sources and only hand-wavy arguments can be produced I've found it's not the strongest/most compelling result for motivating a potential change of behavior. Anyone here could believe this is occurring and it wouldn't likely surprise them but actually knowing concretely can have the effect of changing things. Consider the difference between people assuming various things about the NSA pre-Snowden vs post leaks and how it affected change (or at the least a better basis for it).