Never worked anywhere that developer task and time estimates were considered as "truth" rather than something for everyone else to override or ignore based on e

Never worked anywhere that developer task and time estimates were considered as "truth" rather than something for everyone else to override or ignore based on external constraints. In that case – and I've said this often – the problem is with wider organisational culture and 'agile' or otherwise will not help with that. I work in an environment where those estimates are just bluntly accepted, because they're the considered opinion of a team of professionals, and they're never overridden. If they are too high to meet some other business or marketing constraint, then we can start looking at ways to reduce the scope, extend the deadline, or incur some temporary technical debt. I can't imagine having my estimates 'overridden' by anybody else and would not continue to work in an company where my actual, professional opinion about my own work was routinely ignored.