I really can't fathom why someone would say this other than to shill Arch. I use both on different systems, and they're both better than any of the other package managers for Linux. In my experience, apt has a more coherent syntax and has broken my configuration much less than pacman, but pacman is a bit faster. Apt is the default in Ubuntu/Pop!/Mint for a reason. You really have to be LinusTechTips levels of retarded to fuck your system up using apt.
Also don't use 'apt-get' use 'apt'. They are similar - but distinct - executables, and apt is better in current year.