No he's talking bollocks.
Ehh I wouldn't say it's complete bollocks to suggest regular post-workout drinking (a couple of beers even) will have an effect on fitness. While the research has small sample sizes, with alcohol's effects on hormonal pathways, muscle growth, and alcohol's dehydration after exercise when you sweat therefore losing even more fluids, it's not exactly going to help.
https://www.popsci.com/alcohol-exercise-recovery
Alcohol interferes with your post-exercise recovery
Strenuous exercise temporarily damages your skeletal muscles—that's how we build more. You strain yourself, your muscles incur a bit of damage, and your body takes that as a sign that it needs to build more. After all, whatever muscle you already have clearly wasn't up to the task.
That means post-workout recovery is crucial to improving your performance over time. Alcohol interferes with that process in a number of ways. For one, it dehydrates you, and you've just expended a lot of sweat. You should be stocking up on fluids and electrolytes, not depleting yourself of them. Alcohol also decreases your muscles' ability to use glucose and amino acids, both of which are essential to building new muscle fibers and blood vessels. Without a supply of energy and protein building-blocks, your body can't make itself stronger.
Alcohol also has a tendency to interrupt hormonal pathways, especially in the long term, which may make testosterone less available to your muscles. Testosterone helps your muscles rebuild and develop—generally as an athlete you want more of it, not less.
But it also varies a lot from person to person
Most exercise-based studies suffer from the same problem: small subject groups. Many of the studies on how much alcohol affects athletic performance have a dozen or so participants, which is not nearly enough to draw solid conclusions on their own. Multiple studies have shown an impact on peak muscle performance—enough for meta-analyses to conclude that there is a real effect—but others have found no impact.
Mixed results like that probably mean that some people don't see a huge effect from drinking, especially in moderate amounts. In 2012, science journalist Christie Aschwanden convinced a researcher at the Monfort Family Human Performance Research Lab in Colorado to do a study of how drinking beer affected runners' capabilities. They found (again, with a small sample size) that women seemed to fare better the day after getting tipsy, whereas the men did worse. Together, they cancelled out each other's effects.