Speaking impartially as someone who does not belong to a static or a raiding FC, nor has even completed T5 due to a discouraging amount of really bad PUGs...

The reason this content doesn't go on Duty Finder straight away is because the developers try to encourage players to group together for content on their own. Those that are able to group on their own get first crack at the content. One can consider the delayed Duty Finder inclusion to be a kind-of "soft lock" on fresh content.

And I am okay with this. I don't even care about Coil right now. The whole point of Coil is to get a bunch of imaginary items before everyone else. That's really it. That's not to say I don't covet some of those items myself (like the White Raven Armor Fragments), but I'm not willing to go through the stress and the hassle of getting verbally abused myself or watching someone else get verbally abused just because someone made a mistake. Coil can be a very toxic place and I don't like it. I might as well be running Aurum Vale in full AF1 gear at 50 with a bunch of impatient people with short tempers. That's how "fun" Coil is with the social climate of the game right now.