10 minutes of research makes it completely obvious they're endangering their core business.
Reddit doesn't work without functional moderation. Despite years of asking, the native mod tools are no where close to parity with 3rd party tools. This alienates good mods who are not generic gears you can just swap out, building a strong subreddit culture and rapport takes years of good faith effort. Then they're alienating a sizeable block of the most engaged users, and on top of everything they're shameless discriminating against the disabled.
Who looks at all that and thinks "yes this is definitely a stable venture ran by competent management and a reliable place to expect RoI."
Investors are soulless but they are not stupid.