ok, lets not brand bash at all, k?
yes there is junk made on both sides.
Personally, I love my SD4s (after some upgrades, true) and I get excellent results from them, but they are not for everyone.
Back on topic - Yes, printing ABS without an enclosure IS possible, but not "easy".
There are also more new filament blends on the market than there used be.
As for cooling fans - you don't typically use a layer fan on ABS prints. using a layer fan WILL induce warping much more quickly than without.
As I mentioned above, I print primarily in ABS, and don't even have layer fans installed on my printers. I have no need of them.
As for the videos, did it ever occur to either of you that the camera may be mounted INSIDE an enclosure?
As in mounted on the printer itself, with a clear plexi enclosure around everything?
Of course, it is possible that the prints are being done in something else.
Without actually seeing the label on the spool as it feeds the printer, you just dont know for sure what is being used.
SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1