The best SCRUM master I ever worked with had strong opinions about standups. Standups, he said, were an attempt to address the principle of constant communication. He said most places held to standups too literally and the updates weren't useful to most of the people in the room, which negated the whole purpose.
Almost all of scrum process are intended to enforce agile delivery. Generally speaking, the more mature and disciplined the team, the less you need to enforce formalities like standup etiquette. If you can achieve agility without scrum, you absolutely should. Scrum is like guideposts. A means to an end.