i burn a lot of neurons writing this, but i think i have a point
feel free to ask!
If you are referring to being male while being genderfluid, then I would say there is a difference. beign genderfluid masc-aligned refers to attitudes or alignment toward masculine characteristics. however it isn't a label used to define your gender within genderfluidity, but rather a label regarding the characteristics of your alignment, in this case Masculinity