I assumed they were referring to market crashes caused by irresponsible levels of risks and deceptive practices like we saw in 2008, and/or government-funded bailouts

That was not caused by trading. It was caused by irresponsible lending and deceptive securitisation of that debt.

Trading can bring down a bank (e.g.Barings) but is not a big systemic risk.

Is lending not a trade? Two parties exchange money for terms of repayment/debt.

The trading occurring on the Bloomberg terminal is of bonds, equities, and commodities.

Sure, this subthread was about finance people in general, the big short in 2008, and other government-funded bailouts.

If you look at ancestors there are repeated references to trades and trading, not to finance or banking.

Unless you're trading physical goods for other physical goods, ie. bartering, then it's finance.

often they're trading things with externalities

"Capitalism bad" is generally their point

No, I meant exactly what I wrote and nothing more.

Trading securities is under an incredible amount of regulation, making your point flippant rather than substantive

You continue to read subtext that is simply not there.