You don't have to be an urban planner to know that US cities are anti-human in their layout and design. You don't have to be an expert in disability advocacy to know that it's fucked up if a building only has stairs. You don't have to be an expert in counter-insurgency and low intensity conflict to know that wars in Iraq and Afghanistan could never be "Won".
And pointing out "This shit is fucked up" is important even if you, personally, right now, can't pull a solution out of your ass by your bootstraps.
People who say "Don't complain if you don't have a plan to fix it" are just reflexively protecting the status quo whether they realize it or not.
It's sort of a back-handed appeal to authority fallacy. "You cannot critique the status quo because you lack the expertise to fix it", implying that there are people who do have the expertise who have been working on the problems and the current state of things is the best possible outcome, and who are you to criticize whoever made it this way in the first place?
This will only let me post in news for some reason even though it's not news but posting is never wrong so here you go.