It's going to be incredibly hard for anyone to come with a decent answer to this that is not opinion-based, but below is my general impression from attending a few international meetups with other Esperantists.
While finvenkismo is still very prevalent in the Esperanto community it is my impression, especially among the younger generations, that it is slowly fading away. That is to say, it is not unsupported but the desire to fight for Esperanto as an international auxilliary language is not as such.
And that's one of the main reasons people would not support an Esperantido; to protect Esperanto, and the position as the international language, from potential competitors.
At the latest IJK in Wrocław, Poland, which I attended I heard Ido spoken on multiple occasions and I believe even Popido once.
In summary it is my impression that Esperantidoj are generally not appreciated but increasingly tolerated.