> Every time I fought the double daily standups, the pointless plannings (where we plan when we know nothing, and by the time we get to work on the tasks, everybody forgets what they agreed on), I failed.

That's because indirectly you're suggesting to get rid of people as well. You see, for any pointless ceremony, there's someone (or more) behind it who get paid for that. If you suddendly suggest that perhaps ceremony A and ceremony B don't actually add value (which is probably true), then what you're suggesting is that the people who brought and who offer those ceremonies (typically scrum masters, sometimes PMs) are doing something pointless. You may expect that they won't hear you at all because who likes to hold the "I'm doing pointless stuff and get paid for it" label?

Upper management may know about this, but upper management is too concerned with other topics that they barely listen to the people at the bottom of the ladder.