The citation is in the title: believing that people are going to get rich by holding/trading magic numbers, which is not a value creating activity, is believing that they're going to get rich by creating value out of thin air.
Wall Street trades assets, mostly ownership of companies, bonds and other things that have underlying value, which is also objectively measurable.
'Investing' is a key part of our financial infrastructure, it underpins everything.
Most bankers make their money off of financial services i.e. investing for others (Private Wealth, Retirement Funds), Investment Banking, providing special financing vehicles, market making etc. etc.. Some investors make their money from 'trading'.
Most trading is a financially valuable thing, it provides liquidity to investors.
Now - yes - it can get into bubble like territory, detached from underlying reality, and very speculative, in which case there is some analogy to crypto, but by and large, it's a secondary issue.
And FYI this has nothing to do with the 80's or 90's.
'Access to Markets Behind Glass Ceiling' is actually false.
You have 'access' to 100% of publicly traded stocks. You have for several generations. You even have access to private investments and hedge funds, so long as you meet a minimum criteria (i.e. 100K in the bank). While working at those banks it'll help to have an Ivy League background, even then it's still possible to work there.
The more money you have, the more access to investment opportunities, but that's rational and inherent in the system.
Other than 'any asset can be speculative' there's almost nothing to relating crypto to equity and bond markets.