Is it censorship if relays reject kind 1 notes with stringif...

Raw JSON

{
  "kind": 1,
  "id": "8ff195e5f92ba9ce0a8a1b821b60c7cd3f47c284f051c965fe3e07eb1a15f400",
  "pubkey": "00000000827ffaa94bfea288c3dfce4422c794fbb96625b6b31e9049f729d700",
  "created_at": 1776905354,
  "tags": [],
  "content": "Is it censorship if relays reject kind 1 notes with stringified JSON payload in the content field?",
  "sig": "a096aa1cc706a49ae15f2c065436dd00090293af7e8e911759aae46ec4600d35a03adef0c82b8f91a8d2cb66d8e094556cd9f066e8529adf7881852fd1780474"
}