Hi
What a lot of old rubbish.
1. A broker is often a SB or market maker. It can either be the market maker acting as principle to the trades or they can be a liquidity provider to clients as an execution only venue.
2. This point doesn't even make sense. But I think the point you're trying to make is a SB firm can't route toxic business/clients directly to the underlying market - they can, they do, you're wrong.
3. yes they do. yes there is.
4. you have a point here. Any delay in a fill should raise red flags that you're on the SB firms radar.
5. Stop hunting doesn't happen at SB firms. Your rambling about pivot points is nonsense. A stop order is an instruction to the SB firm to deal at the next available price once the order level has been touched. Simple, no hunting, no pivots, no conspiracy.....
6. clueless.
This person knows nothing about how SB firms operate.
Best, HF.