RDM Scortch

[Archwizard]

Cast X when Y duration left is <5s is more complex?

Mildly, yes. I believe jobs should be iteratively expanded upon throughout the expansions and that a DoT is both a gateway for such expansion and an additional tuning knob.
Meanwhile, RDM has no timers whatsoever to maintain or burst within anyway, compared to BLM's Enochian and Thunder DoT, or SMN's multiple DoTs, Trances and Demi-summons.

It seems to me there are two disparate groups on this topic, one who are used to far more complex jobs and consider DoT maintenance on its own to be virtually nothing (of which you and I are part), and one of those who claim to play RDM in large part because even a single timer's maintenance is considered difficult or stressful.
Woah to us who play at level 80+ content and expect gameplay to have layers.

It's also possible people kneejerk like that is because it feels like a kneejerk "Need complexity? Add a dot!"

And I would love to believe that, if he didn't also say "RDM should ABC" and complain about "disruption", highlighting it's not about dislike of simple DoTs, but rather the fear of any obligation within the rotation to prevent him from casting whatever he wants.

What complexity, since you brought complexity in, would adding a dot to scorch add? It'd just be potency+ on top of scorch.

My point exactly. It wouldn't, so why the talk of "disruption"?