With a third party client Twitter can’t (easily?) measure if an ad was actually seen by the end user (impression) or if it was just served by the API but never rendered on the users screen. A lot of ad measurement follows from there.
That’s a fair point but IMO not a completely unsolvable problem
Re:Twitter API Page
by gardenhedge on Sunday January 15, 2023 @03:46PM
(#34393173)
His goal is to reduce costs, not increase or maintain the user base.
I agree that Elon doesn't care, but he probably should care that heavy users like me can be so quickly and easily lost. And in addition to being more bad PR, 3rd party developers will interpret this as a clear signal not to invest much in integrating with Twitter.