Warnings thrown when adjusting Time Scale to Homogenous Speed in a BlendTree are not helpful to the user

Steps to reproduce:

1. Create a Project and import the attached Asset package
2. Open the Animator "v2Animator"
3. Double click the BlendTree "Running BlendTree"
4. Select child BlendTree "Run" or "Walk"
5. In the Inspector, select the option "Homogenous Speed" under dropdown menu for "Adjust Time Scale"

Actual results: Warnings like "Could not adjust time scale for RunForwardLeftUnarmed because it has no speed
UnityEditor.GenericMenu:CatchMenu (object,string[],int)" are logged in the Console for each Motion in the BlendTree

Expected results: Users are indicated why the operation cannot be completed, currently they are only informed that the motions "Have no speed", when in the Inspector they are clearly set (1, 1.2 etc.) Which speed is needed here? Clip, Animation Speed, something to do with Root Motion? 

Reproducible with versions: 2022.3.62f1, 6000.0.50f1, 6000.1.5f1, 6000.2.0b4

Tested on (OS): Windows 11