If you think an LSP is “obviously not an MSB” you’ve never spoken to a lawyer with any sense at all. It may not be an MSB, and I hope it’s not an MSB, and I think it’s probably not an MSB, but speaking with any certainty about this is absolutely impossible. The law and regulations about this are not even remotely clear and do not consider any kind of system like bitcoin, let alone lightning.

Don’t talk shit about others avoiding substantial personal legal risk.