Moreover, after starting a training, insulin levels begin to fall almost immediately due to the secretion of catecholamines, so I think a 5-10 minute warm-up will reduce any high levels of insulin raised by high-carb foods. And overall, I'm not sure that the overall hormonal response from exercise will be critical for muscle growth. That is, in my opinion, the overall training effect of the quality strength training will play a much more significant role than any hormonal splashes.
Thus, it is likely that the manipulation of hormonal levels of GH (or testosterone) by strength training, certainly has its advantages, but I still believe that high-quality strength work, etc. is more important factor for muscle growth.
Regarding carbohydrate intake before an evening workout, you should understand the following: to get a good hormone response from your GH after your workout, you must have enough blood glucose to ensure a high workout intensity. Yes, it's wonderful that you will get a good splash of HG level from a "hungry" workout, but what does it matter if the training itself goes sluggishly and anyhow?