I totally see how data could become unavailable, I am more asking whether it just really became more likely to happen. It is certainly no mistake not to rely on

I totally see how data could become unavailable, I am more asking whether it just really became more likely to happen. It is certainly no mistake not to rely on single sources, but if that is the motivation, then there is nothing special about now and climate data and mirroring all kinds of data would have been as good an idea a decade ago as now.