A no.10 is known as an attacking midfielder? Then you have
@hellohello saying that Alli plays as a no.10/tip of a diamond most of the time.
Spurs fans saying it's a myth probably don't even know what a no.10 is. The fact that some think no.10 = second striker is proof of that. A no.10 and second striker are different roles. Surely Spurs fans arent saying Alli is playing as a no.8 this season.
Eriksen, Winks, Sissoko and Dier are more involved in midfield play than Alli. He isn't a genuine midfielder this season (it's akin to calling Kane a playmaker because he drops deep and feeds runners like Son and Alli, when in reality Eriksen is the true playmaker for Spurs). He does not run Spurs midfield.