Does EtH actually expect young men in their 20s and 30s, loaded with money and surrounded by leaches pretending to be friends, to actually avoid alcohol for 9 months of the year?
This isn’t sustainable and if he now goes easy on this rule, players will expect him to also make concessions elsewhere.
Also - there is a huge risk of bingeing on off-weeks as players will try to fit in as much before the on-weeks start. This is why cheat days or cheat meals fail. Players are also humans.
A better idea would be to tell the players about self control: tiny portions of alcohol or sweets every now and then to keep them motivated to train hard. Remind them that their BMI is being monitored and they stand to lose their place if they’re unfit.
This is what works with even professional bodybuilders. Even Arnold S and Ronnie Coleman ( 8x Mr Olympia) have spoken about this.