That sounds awesome TBH. I hate Reddit, and think it's Orwellian, but smart engineers shouldn't have to slow down to appease PMs.
Knowing what’s valuable and what’s not is a function of being an employee. Designers and engineers should know where value exists.
If they need a PM to shift them away from valueless work, then I highly question their efficacy as an engineer. I also highly question that organization’s management structure and communication.