If you were dying of cancer and told your doctor you planned on drinking a lot of tea I assume your doctor would be like "Yeah, sure - couldn't hurt." Drinking tea is not weird, lots of people do it, and there are no real risks because you're dying anyway.

On the other hand, if you were like "I'm a biohacker, I'm going to genetically modify a virus to infect me and alter my immune system." Then I assume the doctor would say "Hey, let me get some people to take a look at that." Because that is weird and there are risks.

"Weird" doesn't mean good or bad, it means unusual. Unusual things have the property that we don't do what they will cause, because they haven't been done much, because they are unusual. Genetic biohacking probably does have a greater chance of saving your life, or increasing your farm yields, but there are possible downsides to it that are not present in more mundane interventions.