I went down the top 10 list on graphtreon and saw this:
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Both had a drop in January.
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These had a drop in February (so MeshedVR had a drop in Jan and Feb).
I wouldn't go as far as to say that this is the result of Patreon turning that feature on or off. It seems like those counters were simply corrected to what they should be rather than being actual gains and drops. But obviously, without creating an account and spending actual money as fake patrons to test this theory, I wouldn't be sure.