And seems to be growing? I'm not close to this space, but it feels like Objective-C should be decreasing. I'd be curious to know why it's increasing.
You can still call new Swift only APIs from Obj-C, but you’ll have to write your own glue layer.
> Again please note that a single binary can be counted multiple times, so the sum of the binaries in this graph is greater than the total number of binaries
So even if a binary only uses a small shim of Objective-C, it'll still count towards the Objective-C number.