Semi-support from me.
I can see the benefit of having friends-only filter, especially for people who mainly want to keep up with their friend' achievements and goals, without having to scroll through all the global announcements and drops from other players.
However, one concern is that if too many players would turn off yell messages, it could make it less useful as a community channel. New players often use yell to ask questions or seek help. It would be unfortunate if those questions went unnoticed simply because most experienced players have filtered out those messages.
Another thing to consider is that yell is a tool to build a community feeling with, between players who might not ohterwise interact. Seeing other people's drops, achievements and converstations spark interaction and does make the server feel more alive. I do think that's something very important to maintain.
I would maybe be in favour of adding the filter but than as an optional feature, without having the default setting changed. That way, players who want a cleaner yell chat can customize their experience without potentially hurthing the social aspect of this RSPS.
