PEP or politically exposed person is a person who is someone with a prominent public function. Usually head of state, a cabinet member, diplomat, etc. They are more susceptible to bribery/corruption hence the special classification. Being a PEP does not mean you are immediately debanked, simply your banking activity is more scrutinized than the average person.
Keep in mind Andreessen is an investor in Cross River (
https://a16z.com/announcement/investing-in-cross-river/) which powers many fintech companies (some which have debanked Null AFAIK) such as Stripe, Affirm, Upgrade, Upstart and Coinbase (which I believe Coinbase bans you if you donate to the KF wallet as per Null).
Furthermore Andreessen is an investor (
https://a16z.com/portfolio/) in Facebook, Instagram, Roblox (yeah, the same one with the huge pedo problem), Instacart, Lyft (go gig economy, be a contractor not an employee with legal rights) and AirBNB (destroying your local housing market). In other words, many companies which are a blight on our society.
Andreessen doesn't care about debanking. He only cares if he can enjoy regulatory capture (
https://en.wikipedia.org/wiki/Regulatory_capture). If he can't, then that regulator has to go.
That being said, fuck debanking and I hope there is meaningful reform but remember whenever a rich person champions your cause, they likely have ulterior motives which are not in your best interest.