Comment by ZoF

The rationale is that 2FA was being abused by some telcos with sockpuppets at a net cost of (ostensibly) some 50+Million a year for twitter.

If that's true, and because it's the least secure MFA option, I don't see it being that difficult or controversial of a decision.

I also do enjoy that this is listed as an 800% increase, not really how 0->$8 works.