But centralised platform have a part to take in every P2P transactions as the middle man that fight for your money if any goes wrong.
But if the exchange freezes your coin, saying it is tainted, who is going to interven?
I have a friend, I do not know what he did wrong on Paxful, but said to be manipulating bitcoin ad price and his account was banned, no option again to withdraw through lightning network and not able to withdraw because the remaining bitcoin on his account was only almost up to the minimum withdrawal fee which 0.0005 BTC at the time, but not up to that. Bitcoin was above $50000 at the time, which makes it to be almost $25, but unable to withdraw it on Paxful.
There are inconveniences you can still experience on centralized platforms.
People do not just want to learn in depth, they prefer the easy way that centralized platforms are offering them, because they know less, they think using centralized platform for p2p is better, but not. They also like the zero fee transaction that do attracts them. But people are also making use of decentralized exchanges successfully.
On Binance p2p service someone I was paired with claimed they'd made the payment but I got nothing for 24hrs and I was forced to use the appeal button, later I got my money but that's because of the exchange intervention.
Try and learn how decentralized exchanges works, you were not scammed simply because you did not release the coin from escrow, if you did not receive any money me release the coin from escrow, that means you have been scammed.
You do not have to depend on centralized platform before doing that. Many people even do not know what is multisig, using 2-of-3 multisig wallet for p2p, so how are they going to know how decentralized exchanges works.