That's certainly true, but there's probably another effect at play here: language learning is extremely time intensive, and you don't progress if you're not practicing a minimum amount of hours per month - you even lose progress again.
You probably could break through to hundreds of phrases with spaced repetition software and "only" a concentrated effort of a few dozen hours. But, yes, this requires almost daily practice. And then later, many hours of maintenance effort.
That's certainly true, but there's probably another effect at play here: language learning is extremely time intensive, and you don't progress if you're not practicing a minimum amount of hours per month - you even lose progress again.
You probably could break through to hundreds of phrases with spaced repetition software and "only" a concentrated effort of a few dozen hours. But, yes, this requires almost daily practice. And then later, many hours of maintenance effort.