When it first launched it was quick, simple, beautiful, and easy to use compared to all the alternatives at the time.
Ever since it has become more and more muddled as they regressively focused less on users and more on revenue with quick cash grabs and tools to artificially increase popularity (you can "clap" 50 times for any article).
They are only popular these days because they were popular, and they've been riding the coattails since.