I did what you said, and his response was different from what your link said, which was Ido was developed in the early 1900s, and retains a sizable following today, primarily in Europe. It is largely based on Esperanto, created by L. L. Zamenhof. Ido first appeared in 1907 as a result of a desire to reform perceived flaws in Esperanto He said Ido was created before Esperanto.

Here's a link to the book he wrote about it: Nuessel