This is ridiculous.
I finished it. The game got more frustrating over time with the forced combat sections, trial and error traversal, and tacked on collectibles and side missions.
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You like it? Great. Others like it? Awesome. But hand waving valid criticisms with "people must not have finished it"? Why don't you just add that the people criticizing it just aren't good at the game or maybe aren't smart enough for it?
There are around 3 or 4 forced combat sections totalling maybe 10 minutes of play... The rest can be ran through.
The traversal only has an element of trail and error if you play with no runner vision and even then if you take half a second to look at the map before setting off on a run you should be absolutely fine. If you have either type of runner vision enabled then there's actually a trail along the map showing you the way so you have no excuse for trial and error.
The collectables are rubbish but they're also completely ignorable, your experience will be no worse if you just past every single one.
The idea that the side missions are tacked on or filler is also rubbish. The gridnodes for example are extremely well designed puzzle platform sections. The rest for the most part are different variations of time trials. Saying time trails in Mirror's Edge is filler is like saying point to point races in Forza are filler, you're just wrong.
The thing is that so many of the criticisms are just invalid. Yeah the story is meh but the idea that the open world is just checklists and filler is just straight up bullshit.