They and their very excited fans would love everyone to believe that but it aint true. They are fine, but they aren’t “#1”, especially if you need customer service. I also have found the bambu labs user base to generally be more toxic than the general printing community at large because of this tendency to insist that they are the best
I’m not saying they’re bad, they are fine, they can do the job, but one of the reasons there are so many printer companies is because different users have different requirements and budgets and what’s best for me, my projects, and my budget may not be even close to what’s best for you, your projects, and your budget. The field of options is extremely wide, and basically every printer, even the very cheapest ones, can print super high quality models and parts if you just tweak the settings to print slowly enough
Anyway I wouldn’t stress too much about having the “#1” because eventually you will realize there is no such thing — you should choose a printer that meets your needs and fits your budget and desired level of tinkering/maintenance. The best printers in the long run, truly, are the ones that have good thermal runaway safeties and are easy to maintain and keep running safely, both in terms of labor needs, and parts availability, not necessarily the ones with the longest list of features or most impressive looking paper specifications. Remember, a 3D printer is essentially just an angry robotic hot glue gun, and if the safety features fail they can absolutely start a fire. It’s not super common, so not something to have great fears about, but it can happen and it does influence some of my purchasing decisions, especially for my project printer