Haven’t you seen all the censorship and debanking perpetrated by governments, banks, payment companies, smears by political groups, etc.??
Imagine you're in the stone age and want to exchange the fruits you gathered for a tool someone made. This someone doesn't like you for whatever reason and doesn't agree to exchange.
Does it matter how you pay? Bather? Physical cash? Centralized fiat? Onchain Bitcoin? Lightning? Custodial Lightning? No, it doesn't. If they don't want to they don't want to.
Oh, so you can hold your bitcoin, but even though LN is taken everywhere, you can’t use it because all the wallet and node operators and exchanges have to ban you to comply with their overseers…
The option to use custodial Lightning doesn't mean paying with self-custody Lightning is impossible.
Also, again: if they ban you, they ban you. No matter how you pay. Stop trying to break the laws of logic.