The most interesting question related to this Will Kinney tweet would be what's going on with Betelgeuse? but I can't help but wonder why much but not all of the photometric data is clustered in increments of 0.1 magnitude.
These stripes were the result of posting some preliminary data where analysis had some ultimately uninteresting effect that later disappeared, but I don't think that's the case here.
So I downloaded data on Betelgeuse from @AAVSO . Here's a plot of visual magnitude vs Julian date for the last 10 years. Clearly something very strange going on -- a whole lot of anomalous dimming happening very quickly, in the last few months.