If you tie your organization to a legal entity, it may help limit your liability if the organization gets sued, but also open you up to being prosecuted criminally if there is grounds for it.
Pseudonymity can be leveraged for a lot of things, but if you plan on tying your human identity to the organization you need to be aware of the risks. The ‘unstoppable’ nature of blockchain means you can be arrested while the organization continues to operate - if it is designed well enough, and situated in a community capable of taking the steering wheel.
‘Decentralization’ has to be baked in, not just on what software you are using, but also how the organization is structured. Without key ‘ringleaders’ involved, it makes prosecution tenuous as best.