"The risk of having 100% in self custody for me even on a ledger is equally high compared to having some on centralized exchanges. I just by default like to spread funds around as much as possible ..."
Hmmm. Not sure I understand your perspective on the first part ...
But ...
On the second part, my version is to ensure I don't have all of my investments on any one blockchain. Most of these DEXes, etc. are on EVM-based blockchains (7 of which are supported by ParaSwap). I make some effort to keep funds distributed amongst them ...
Let's say I put everything on a ledger, there is a risk of losing it all in case somehow it gets destroyed, stolen, doesn't work anymore, if ledger gets hacked, or whatever.
Centralized exchanges are a way for me to diversify that risk so there is no central point of failure. I don't like the idea of having a lot of your wealth in your house on a stick and a piece of paper. It's an issue that crypto still needs to solve somehow as I think the majority of people would feel safer if it was in custody of a 3rd party somehow.
Okay. Now I understand your perspective. Thanks!