I agree that Git has
more of a claim to this than Facebook, but that's kinda like saying a turtle is more of a car than a banana is a car.
Like, yes, it's true. Unlike a banana, turtles have 4 movement-enabling things, they use them to move mostly forward and backwards and not sideways, and other things can ride on them. It's probably more of a car. But it's not a car.
Git has no issue tracker. It's really not a controversial statement. The git community has common practices using something else to work around that, but if that's all you need to say "therefore git has X" then you can claim git has a CI framework because everyone and their dog uses GitHub. Which also has email integrations.