There are two primary schools of thought on intensity distribution. One keeps the vast majority of riding very easy and concentrates the hard work into specific sessions, while another spends more time living near threshold.
Choosing between them usually comes down to time and the type of fatigue a rider can handle. The polarised approach fits those who need to maximize a limited window by making the hard days truly hard. Conversely, threshold work can be more sustainable for those with more hours who can absorb a steady, moderate load without burning out before the weekend.
Does your current time availability dictate which intensity distribution you use, or do you choose based on the specific demands of your goal events?