Ok, as a scientist we are FAAAAAAAAAAAAR from ever accomplishing this. And just for you laymen out there, lemme explain where this video falls down. (Laymen sounds like lame men
)
1. We already have similar technology
Here's the thing, we already have many different DNA modification tools including Cre-lox, RNAi, MiMIC and so much more. The only reason these are rarely discussed is because those are rarely used outside of research and on model organisms. Plus their efficiency and hit rates border around 20% accuracy at best. Crispr is far more accurate, but it isn't that much more efficient. From a scientific point of view, most of these systems are conducted and used on mice to test/induce cancers. It can't really 'fix DNA' or cure diseases. It mostly just cuts it at a certain point and hopes the DNA repair mechanisms kick in and repair it. I must emphasise again that efficiency is at play here. Creating a 'designer' baby is far more complicated than that which brings me to the next point.
2. Ethics
There are many laws both national and international that govern the laws regarding human research. For one, directly interfering with a human baby is nearly impossible to get a pass for via an ethics committee. The only way we could possibly test this is through very early developed embryos but even then, the ethics are an absolute bloody pain to deal with.
3. Not for humans
This technology is not designed for humans. Even with mice and various other organisms, it's not that perfect. Some organisms such as zebrafish and flies seem to work well with it, but insertion of the gene into Mice gametes is difficult and as far as I remember, are not as efficient as some of the other DNA cutting technology.
So stop hyping/hating you nubs. This shit is for researchers, not lame men I mean laymen. I'd give the person a Nobel prize tbh. Good invention for studying model organisms.