> Or did he end up listing some movies that he didn't feel were as good as the others, just to meet the quota?

The assumption behind this statement is that the list from the article is "Spike Lee's Top Films"

This list isn't about movie quality, it's about forming the minds of young directors.

Spike Lee speaks his mind. Nobody tells him what to say.

If he updated his list, it was because he felt the new list would do a better job helping new directors grow in their craft.