The first year was rough, from what I've read. Mine arrived March 2025, it has taken no work to print excellently, and at about 700 hours I have lubricated it every 200 hours, and I just tightened the belts about 50 hours ago. That's it. If it's less than $100 a roll I've probably printed it. I have no complaints.
From what I've gathered across Discord servers (QIDI official, QIDI unifficial and Team 7 mostly), there is a decent percentage of machines that more or less just work, as has been your experience. For the less lucky ones, it's a lifetime of tinkering. I'm on the latter cohort, unfortunately.
Not to mention that out of the box you need to lock the printer in a cabinet as its printing. It used to give me headaches to be close to it for more than a couple minutes.