This can also seen as Twitter getting out ahead of https://www.congress.gov/116/bills/s2658/BILLS-116s2658is.pd... (press release at https://www.warner.senate.gov/public/index.cfm/2019/10/senat...) -- which would call for NIST to define:

model technical standards by which to make interoperable popular classes of communications or information services, including—

(1) online messaging;

(2) multimedia sharing; and

(3) social networking

(And all within 180 days ;-) No small feat.)