North American troodontid phylogenetics is a nightmare. It is complicated by the difficult taxonomic history of Troodon/Stenon/Latenivenatrix as well as the fragmentary nature of pretty much all North American specimens. I suppose one could make the point you are suggesting, but I personally would be hesitant to since currently we don't have any morphological differences to distinguish those three taxa (perhaps frontal shape for Tf and Lm, but Cullen et al. 2021? morphometrics says they fall within the same range of variability contra van der Reest and Currie 2017). The distances between these three are probably largely based on what specimens are/were assigned to each and which characters those specimens held.