Carbs back when had all sorts of fixable issues at times, a bad float would stall at idle for example. Dirt was a problem. The choke could be a problem. Dirty fuel filter, bad gas pump.
A shadetree mechanic could fix most of these pretty readily. AS emissions rules got tougher, carbs got more delicate and less durable with more "features" and gizmos. If you had a manual transmission, some cars would send more gas as you put in the clutch and the engine would rev.
Fuel injection was really one of the main advancements since ca. 1990 in cars.