The ad platform is just barely usable, with an only slightly better UI than LinkedIn.
Its core product has not changed meaningfully in 10 years.
The company down much of its developer-facing offering years ago.
There are e-commerce websites with a more complex stack than Twitter.
This is a product that can run on 1,000 people and nothing about the user experience will be different.
There is probably so much administrative, HR, and operational bloat that the company probably rivals most universities.