It is probably pointless today, algorithms are much smarter than people think but historically these algorithms would look for key words and flag them to someone to review and maybe ban you.

Now it is all automated. The bots needed to be smarter to get there... not only did they have to find f*ck and sh*t, but they also had to be more nuanced and tell the difference between "that was rad as f*ck!" and "I will f*ck your wife!".

But yeah, all in all, it is to reduce the chance that you get demonitised or shadow banned or banned by the platform.