

Some things, in my most humble opinion, should be censored such as hate speech and overt racism
You can choose to filter those out, for example Seedit by default filters out NSFW content. Plebbit is not pure chaos, it’s a p2p protocol that allows communities and users to connect if they really wish to with no intermediaries.
The default limit on comments size is 40kb, and each subplebbit (community) can configure that to be even lower. Hardly doubt people will find a way to embed 40kb images