Guess what: you don't need a blockchain to achieve that. If you want "uncensored communication", then what you probably care about, is to deliver your messages to your recipient. I guess you don't want to also broadcast your neighbours' conversations, and keep track of that. And there are some applications, which can provide it, and the common factor is that none of them use blockchain. Because you don't need it. You don't need "double-spending resistance" on your conversations. If Alice will say "hi", and Bob will reply with "hello", you don't need to keep track of that, to make sure, that nobody said "hello" twice.

Also note, that when Satoshi tried to bootstrap the first nodes, then he just used IRC, an existing communication protocol, which was there long before Bitcoin, and which you can use for "uncensored communication" even today. And also, he used SMTP (e-mail), another existing communication protocol. Which means, that if you say "I need instant communication", then the answer is not "BRC-20", but rather something like "IRC". And if you say "I want to receive messages, when I am offline", then again, you could use something like "SMTP", instead of "BRC-20".

Well, if the problem is that on-chain peg-in transactions are not sufficient to bring all people inside LN, then there are other solutions. One of them is to put channel-opening transactions to the off-chain world: https://delvingbitcoin.org/t/can-game-theory-secure-scaling/797/1 And another is of course CoinPool, or other similar proposals, to switch from 2-of-2 multisig into N-of-N multisig: https://coinpool.dev/