It also reduces the participation of arbitragers and algo traders, which in turn helps increase transparency in the markets. But then again that is at the expense of many small retail traders.
So transparent .. even better would be to physically trade in local markets. Everything will be transparent then. You will even know who bought who sold who is naked who is not, completely transparent. Then the best way to trade should be to trade groceries.
ofcourse i agree with the part that irresponsible traders r responsible for their actions.. but u r not considering the systematic risk... overleverage can kill brokers in black swan events... current generation of traders may not have seen much of that .... some of us must have traded lets say the surgical strike day or trump election day... banknifty options spread was like 200 bid to 300 ask or more... if u r overleveraged and have huge quantity .. u wont be able to get out with that kind of spread without paying hell lot of money to the market maker... things look rosy and hunky dory in normal mkts... when push comes to shove everything breaks down ..