This was from way earlier in the day so forgive me:
No, not on this forum there isn't. Just yesterday I was trying to get a group together for flawless raider. DestinyGAF was completely useless. I posted laying out what we are doing and how many we needed. I updated that post a bit after. I even reposted for a new page. Nothing. Not even acknoleged here, while at the same time 2 PS4 raids filled to completion.
Don't use the excuse that you can rely of GAF or any community for that matter as a means to dismiss the prospect of raid matchmaking when you are only seeing it from the perpective of the most populated and active (preferred) platform. This community on GAF is a PS4 community with a few Xbox one lurkers and occasional posters. If I want to quickly fill out my raid group, I'll take a couple randoms picked by a decent matchmaking system in a heartbeat if it means I don't have to screw around for an hour or more trying to find the exact same thing on forums and lfg sites.
If you don't want to use matchmaking, cool, don't do it. It doesn't affect you. Bungie is afraid players will have a bad experience with randoms while we are already having bad experiences with randoms (that are harder to find), or no experience at all. Play the way we intend you to play, sure.