It's the money.
US Fed has raised interest rates, destroying money for the first time in decades in an effort to stop our inflation problem
The knock on effects is that banks literally have less money to lend to companies. Some companies are affected more than others by this environment. Tech was hit hard, extremely hard.
With hundreds of thousands of layoffs, tech industry is contracting. Silicon Valley bank literally evaporated in the span of 3 days. Twitter was losing money and had to sell out. StackOverflow is losing money and is currently selling out.
In this environment, Reddit is about to launch it's long awaited IPO, the time when the public is allowed to directly buy Reddit stock and invest into the company. That's what Initial Public Offering means. If Reddit does well, Reddit will pull in lots of money this year through this IPO.
The CEO of Reddit needs to prove Reddit is profitable, or if not profitable... Will eventually be profitable. Stockholders don't care about Reddit drama for the most part, but most are smart enough to read financial sheets. Reddit needs to show growing revenue, growing profits and cutting costs to attract money.
As such, all of what Reddit's CEO has done makes sense in the context of the IPO. He is betting that shareholders won't notice the drop of high quality content creators from Reddit, since that's not a financial number that's reported. He can IPO, raising millions, maybe even billions for himself. The golden parachute outta here when everything gets screwed up in a year or two and collapses.
I think today's investors are smarter though, and the bearish economy and high interest rates means more investors will pay attention to underlying issues.