Parag used to be CTO and seems to have presided over multiple years of lethargic development and glacial product evolution. A lack of fancy new features in the

Parag used to be CTO and seems to have presided over multiple years of lethargic development and glacial product evolution. A lack of fancy new features in the frontend UI doesn't mean very much about the development and product evolution as a whole. Contrary to popular belief, Twitter is not just the user frontend. There's a ton of other systems shuffling data around behind the scenes - advertising account management, adverts themselves, timeline 'AI' for inserting stuff into people's views, anti-spam, anti-fraud, site reliability, apps... I imagine you'd need to be quite high up in Twitter to really get a sense of how quickly things are moving, and as outsiders you and I have absolutely no chance of getting any sort of insight from looking at the website.