Again, I'm not saying there's no value in sequences (though in my view teachers should be much more careful to make the point that a sequence is just intended as a series of examples, and the point is for people to use them as inspiration for improvised movements, not to execute them by rote). Only that there isn't value in a follower pretending a leader has led movements that they haven't.
Hmmm. I disagree, but only slightly. There is some value in a follower doing the movements the leader should have led - but only as an illustration of what the leader has to actually lead (i.e. a 'pretense'). Ultimately it has a negative value IF the leader believes that they led it, and thinks it works with every follower. So, the leader needs to understand what effect their lead has, or should have, on the follower. But they need to attempt that with many followers to get it correct - and, if possible, to mix it in the context of learning, e.g. it's not an ocho cortado; it's a giro/molinette this time.
That also works the other way round. Unless you understand what the lead is saying, you may not interpret it correctly.
But we also have to consider how teachers have decided to teach some aspect to the student, and what the student actually learns at that phase. For some a sequence is sufficient. I guess it's another wall to climb in order to move past that phase. Some are happy where they are. They can invite, or be invited, by someone at a milonga and have a pleasant tanda - which was probably their initial target. Next comes technique, more vocabulary, floorcraft (hopefully

), connection, intention, musicality - even some 'flavour'.
Is 'flavour' the same as, or part of, musicality? Just thinking of a recent milonga. Had some 'tunes' I like, but the contemporary renditions lacked the flavour, the spice, the umami to inspire. (And nothing against some contemporary renditions of old tunes - can be 'better'/different). They were danceable, and could be danced with musicality - if you wanted to just dance to some music. Of course, your dance partner may not agree with your flavour of that dance!