There's a number of companies out there, like "brightdata", which pay a small amount to app developers to install a native "sdk". That SDK mimics a browser, and makes requests as if the user's device is doing it.
Since it's using a large number of real user's devices, and closely mimicing real web browsers, it ends up looking incredibly similar to real user traffic.
Since twitter allows some amount of anonymous browsing, that's enough to get some amount of data out. You can also pay brightdata for one large aggregated dataset.
