You have a very healthy opinion on this and I must admit, you're right with everything you're saying. Yet I'm surprised how little was necessary to get over the past few months. Yes, there is protest on the canvas, but mainly it's business as usual and a huge success for Reddit. Spez and others realised they need to do something to calm things down and people easily fell for this, especially those on the German subreddits. The canvas was still nearly blank when there was already a huge German flag present. Great job! /s
This is quiet normal and not an error. It's the Z-Seam, caused by the printer when finishing a layer and briefly stopping the printhead, before lifting it along the Z-Axis to the next layer.
Here you can find more about this effect and how to reduce it.
Once you've seen how the heater cartridge melts the aluminium hotend and liquid aluminium setting everything on fire, it drops onto, you never print unattended again!
For longer prints I always wait until the weekend, before starting it. As well I pause the print and turn heatbed and the nozzle heater off, before heading to bed. This method isn't perfect, as it adds another possibility for failures, but until now it worked everytime. My last print succeeded after ~28h (print time only) this way.
Another option is, to divide your model into smaller parts, which are easier to print and glue them together, when everything is finished.
I don't have this printer, but the Ender 3 1st Gen. So here are some suggestions for things, I've noticed on mine.
NTFS doesn't work. So did you format the SD card with FAT32?
Is your SD card maybe too big and did you try smaller cards, with 4GB capacity for example?
Depending on your PC and the Mainboard of the CR10 you might need an FTDI driver to get it work. Did you check, if your OS recognises the printer in the device manager (Windows) or with lsusb (Linux)?
It's sad they got so much hate back the days. Their style was so awesome and different. I always admired that, but didn't have the courage to go full emo and draw everybodys hate on me.
Omg a Gaston comic <3 I haven't seen them in a while.