I believe it's mistake to read too much into what happens in the immediate aftermath of anaesthesia. It's a different you.

Of course those reddit videos of undying love are sweet. But, people are often very very very inappropriate. It doesn't mean much, it doesn't mean they are unbridled sexist pigs, or heading there. Post-operative recovery Nurses have good stories.

That said, older people come out of Anaesthesia a bit differently. I am told by anaesthesiologists, that older people don't always come back the same even 6 months later. If you're old you need to be prepared for this, and it can acellerate decline in cognitive function (so I am told. I am not a health professional)