A question on 'leadership' Why is it common for pastors to advocate leadership (including their own) when it is easy to conclude that it is anti-biblical according to what Jesus had said?

"Do not be called leaders; for One is your Leader, that is, Christ." - Matthew 23:10 NASB

Note: some translations use "instructors" or "teachers" instead of "leaders"

Clarification: I would like someone to try their best to explain the original context of what Jesus said here. Preferably including Greek references.
The NASB is very much in the minority when it renders the word here as 'leaders'. Most translations have either 'masters' or 'instructors'. Even the NASB admits that 'teachers' is a possible meaning. So it is really far from clear that there is a prohibition on being called a leader.

Elsewhere in the New Testament it is clear that there were 'leaders' among the church. Hebrews 13 instructs Christians to be obedient to the leaders in the church, and in Luke 22 Jesus gives instructions for what Christian leaders are to be like (and uses the same word). So it seems pretty clear that Jesus isn't forbidding the existence of leaders (or leadership) in the church, or indeed the calling of those people 'leader'.