If you don't value those things then just be low key in your input, its literally 10 minutes of your day and has the potential to present an avoidable issue. To discard it as "management trash" is IMO a massive amount of disrespect toward your fellow team members. They can help and the stand-up opens opportunities for help. There's design work, review work, product management work, scheduling, triage, retrospectives. There's ample opportunities for efficiency gains in these areas during a stand-up outside of just writing code. If you think your job is just writing code then I can see how you might think they're useless but nobody's job is, we all work in teams.