Tbh, I argued with my dad for years about using a laser level on every single course.
He always said his string line and eye were good enough, but then he came to help me with a big chimney job in Grand Rapids and saw how much faster we laid the brick. He admitted after the third day that it cut our time by about 20% and the lines were perfect. Anyone else have a stubborn old method they finally gave up on?
Sometimes the old way builds a better skill though. Relying on a tool for every single course can make you lazy at spotting issues by eye. That instinct is what fixes problems when the tech fails.