"I can't drink whiskey like I used to back then, that's for sure"

This quote by Sebastian Bach is most likely describing his younger years, when he was able to drink scotch without feeling the results of it. As he has grown older, he has actually understood that he can no longer drink whiskey like he used to. This could be due to a range of reasons, such as his body not being able to deal with the alcohol along with it utilized to, or he may have developed a tolerance to it. It could also be that he has ended up being more knowledgeable about the impacts of alcohol on his body and is trying to be more responsible. Whatever the reason, it is clear that Sebastian Bach is no longer able to consume whiskey like he utilized to. This might be a sign of maturity, as he is now more knowledgeable about the consequences of drinking too much. It could also suggest remorse, as he may be wishing he had actually been more responsible with his drinking in the past. Whatever the reason, it is clear that Sebastian Bach is no longer able to drink whiskey like he utilized to.