I also found my printer (Elegoo Neptune 3 Pro) to be flawless for about a month until it started needing more conscious levelling and bed cleaning between print

I also found my printer (Elegoo Neptune 3 Pro) to be flawless for about a month until it started needing more conscious levelling and bed cleaning between prints, started getting fussier about temperatures (ended up replacing a possibly faulty thermistor that was making my bed temp fluctuate), and dealing with waterlogged filament and needing to solve that with filament driers etc. I'm not saying it /can't/ be smooth, but I contrast it to my dishwasher, which I expect to wash dishes, correctly and successfully, about 99/100 dishes (assuming I rinse them well), and then when it starts to decline in 3-5 years, that it's time for a new one. 3D printers are not to that level of reliability yet, nor are their support systems around slicing/supporting/etc.