The words 'Moot' and 'Mute' have been confused, even conflated, recently, usually with 'Mute' being confused for 'Moot'. People write that a situation is 'Mute' rather than 'Moot', which is what is really meant
I can see someone who hasn't been informed of the difference thinking that the 'u' in 'Mute' is a long 'u', sounding like 'oo', with the 'e' at the end making the 'u' a long vowel, but in this case, that isn't correct. 'Mute' is pronounced, 'Myoot' and it means, to be silent, to be unable to utter sounds. Sure, a situation in and of itself is unable to speak or utter sounds, but again, that isn't what people mean when they incorrectly say the situation is 'Mute'.
'Moot' means that something no longer applies, it has no relevance. For instance, discussing whether ten year olds should be allowed to work full time in factories or not is a moot subject because it has already been decided that ten year olds should not be allowed to work full time in factories. That doesn't mean an academic discussion couldn't be had, but there is no urgency to the matter. A discussion on this topic might be useful to hone debating skills, but the subject itself has no bearing on society's view on the matter - it is 'Moot'.