The topic here is not geology, speleology, or history. Nor is it about the reason why so many karst springs are blue. This is simply about the name. It stands to reason that an exceptionally blue spring should be called a "blue spring".
Unfortunately, this leads to an accumulation of the name and so there is a significant risk of confusion. Of course, this problem also exists with "bat caves" and "stalactite caves". This is particularly dramatic in China, where caves are often named after dragons or lotuses and there are therefore dozens of dragon caves and lotus caves. The Chinese solve the problem by simply concatenating the name of the place with the name. Where there is a risk of confusion, we have done the same.