I use a dry cut saw very frequently... 10-30x a week. I used to have Milwaukee, now I have a dewalt.
They are effective and efficient for the work I do... Huge consideration is size... They are compact enough to fit in a van with toolboxes, gangboxes, roll groover, rigging equipment, and other power/hand tools and construction equipment.
The blades are expensive (I don't have to pay for them).
The blades last for a very long time if they are used correctly.
The back stop/clamps do not always give you a 100% square cut.
The cut is square enough to file/groove schedule 40 pipe. (Maybe 87-93 degrees instead of 90).
The saw makes a mess, the saw throws some hot metal shavings at you from time to time, and the saw is loud... STUPID FREAKING LOUD.
That being said... Yea, the method of dry cut saws kinda *****... But it gets the job done, pretty damn well. I've made thousands of cuts of 2" and 3" schedule 40 hydraulic oil pipe, 1/2-3" Emt, 1/4" angle iron, 14-16 gauge sheet metal raceway. Even spent some time cutting finish stainless trim (maybe 16-18 gauge).
Also, The cut capacity is huge... I think the largest thing I regularly cut is a 3/16" thick, 8"deep x 4" tall rail section.
I agree that the method is not machinist level accurate, but the speed/size/efficiency/cost are worth noting. While it wouldn't be my first choice for any personal/precise cuts, it serves as a workhorse in my day job.