New Relic wants to capture as much data as possible so that they can charge you as much as possible. I run a small environment (~20 small VM's) and we quickly went over the 100GB monthly free plan and that is with just APM Metrics. We found it impossible to figure out how filter out irrelevant metrics and their support/community was not helpful (again, they have no interest in helping limit how much data is collected).
We tried the log ingest but even for 1 VM, it was several GB per day data. 99% of the log data was irrelevant and trying to figure out how to filter it via New Relic was extremely difficult to figure out. We turned it off.
I guarantee that if they turn this on on 5/3, then 90% of their free accounts will shoot past the 100GB free tier. They hope people will convert to paid plans.
If they provided clear and easy to understand examples on how to filter the data before sending it into their environment, it would allow people to decide what data to send and then only have to pay for the data that is relevant instead of EVERYTHING.