Not every drunk/alcoholic person is the same. Bummer you had that experience though.

There's an old saying that the first thought in your head is what you're conditioned to think, and the second is what you actually think. Kind of an ego/id thing.

True to an extent but there's also a level of brain damage that can come with long term alcoholism (or extreme intoxication) where they lose the ability to form coherent thoughts while plastered and their drunk ramblings can be contradictory.

I regularly tell people I absolutely hate that I love them while drunk. It's how my brain makes sure I don't tell them to go fuck themselves.... I also tell everyone i like, that I love them though....

Alcohol makes you feel and act different way. Your statement is not correct

While drunkenness isn't a blanket excuse for behavior, I don't believe it's inherently fair to say we are our true selves while drunk. Alcohol affects our reasoning, it doesn't merely remove filters.