We get to choose the genes when genetically modifying, and it usually takes a few years (plus health metrics and research once complete).
Contrary, when selectively breeding we can breed for traits which we are not guaranteed to actually get, and it takes a few decades (plus health metrics and research once complete).
Going on a tangent here: While I fully agree with the above, there is an amount of knowledge after which fact checking becomes bothersome, and some people just skip fact checking overall. One could argue that, while knowledge is never useless, unchecked knowledge might become bothersome or dangerous.
See flatearthers, scientology, etc. for extreme examples.