Trump's stance on Section 230 is purely in self-interest.
If the media companies supported him and discriminated against his opponents he would have no problem with it.
If the media companies were fair and unbiased, he would have no problem with it.
We just saw how an election was influenced.
Obviously we don't know the exact extent, but the quotes around "35% of Biden voters being unaware of the Hunter laptop story" should scare everyone, regardless of political affiliation.
Big tech is a threat, and the potential for power, influence, and corruption is immense.