Your strength comes both from your nervous system and physiology. Training your nervous system without also building a proper physical foundation to handle tension is a fast track to injury.
They are linked, but what I meant was its not a 1:1 relationship. You can get stronger without as much hypertrophy, or you can get bigger without as much strength gain.
The only reason I mention it is because I often see people, especially men, assume getting bigger is the main focus of getting stronger and healthier. But a more holistic approach including stretching, functional strength excercises, cardio and balance training is perhaps more important