Skill level necessary to clear HW MSQ content

[Iscah]

As far as I can tell no one is suggesting that.

You were the one suggesting that (or at least appearing to suggest it), though. Thus my comment was directed at you.

Hasrat said there was no need to do hard content just to learn specific telegraphs. You responded that there's value in learning the "early fights" before moving onto later ones - which in the context of OP's intent means you're saying there's specific value in learning those "earlier" EX fights so you'll recognise the mechanics before moving onto "later" Heavensward. Which isn't any more logical than learning them at whatever future point you first encounter them because it isn't any easier to learn then in one place or another.