I don't see anything wrong with a waterfall practice as long as it has been followed by good software engineering principles, like efficient analysis and good quality planning and testing.
Before Agile existed, successful software projects have been built and deployed worldwide... They only failed when they lacked good software engineering principles like efficient analysis or planning or quality testing.
Agile will also fail if it does not follow good software engineering principles.
I don't see anything wrong with a waterfall practice as long as it has been followed by good software engineering principles, like efficient analysis and good quality planning and testing.
Before Agile existed, successful software projects have been built and deployed worldwide... They only failed when they lacked good software engineering principles like efficient analysis or planning or quality testing.
Agile will also fail if it does not follow good software engineering principles.