Back in my day, 50 years ago, UCL was very keen on making sure its students knew the story and "The Godless Students of Gower Street" was a well known alternative name for UCL and JB's body was star material.
Wonder why it changed?
No more so than anywhere else.
The primary reason was Oxbridge blocked the attempts at forming universities elsewhere and the early centralisation of state authority aided them in this.
There were several other universities in England in the middle ages but none survive.
Stamford is one.
Northampton founded in 1261 but was banned in 1265 due to a mix of its patron having become an enemy of the King and Oxford supporters taking advantage of it.
When the local polytechnic wanted to become a uni in the early 2000s they had to specifically request it be repealed.