Who is Barry Silbert? and what is his agreement about?

[OmegaStarScream]

I'm getting a little bit lost with all the SegWit, BU, BIPs stories lately. I was on Reddit and found this: https://pastebin.com/VuCYteJh
Who is barry Silbert exactly and why his agreement with the participants matters?

Does this mean that SegWit will be activated no matter what in 21st September 2017? I also thought that Bitmain and Bitcoin.com are against SegWit which makes it even weirder.

If someone could take a few minutes from his time and explain the current situation, services/people need to support UASF (BIP149) or we need the miners to support SegWit proposal?

[European Central Bank]

He's the founder of secondmarket which started gbtc. I think secondmarket is now grayscale. He's basically a wall st and crypto player and has been for a long time.

Bitmain were anti segwit but with bip 148 growing I think they'll want to kill that precedent before its set.

[Red-Apple]

there is a topic here by -ck discussing this: https://bitcointalk.org/index.php?topic=1928093.0

things are getting too complicated, i admit i gave up on understanding what is going on a couple of days ago. it just gives me a headache now looking at all the drama, and everyone just fighting to no end and calling each other shills

[BillyBobZorton]

Barry Shillbert is shitcoin pump and dumper using his tweeter to do so, just like most of those tweeter bitcoin personalities.

Apparently they did a closed-door agreement, hired some morons to create their own node software, and want to do a rushed hardfork to 2MB and a segwit under a different BIP.

This is nonsense. I see UASF as being safe compared to this (and I dont like UASF because of the risks it entails)