Because we (not we as in the people but ICANN or whoever's in charge) are allowing corporations to use trademarks as top level domains. While before the top level domains belonged to countries or were general, now they can also be populated by those rich enough. Personally I see it as brands encroaching on a previously "public" space. Would Google allow me to register fuck.google or anything that could damage their brand? I highly doubt it. I wouldn't find it so bad if any joe schmo could create their own TLD, but this is an instance of allocating address space to the most powerful and letting control it as free advertising. It's not a technical problem by any means, but I see it as a moral one.
Well fuckMicrosoft.com was a thing [0], unless with the .google.com thing you meant as some kind of subdomain on Google's site. I don't think those are available for registration anyway. Also, FWIW, a .sucks TLD exists. [1]
Simple: I just don't see the point on using these new TLDs, they are confusing, it's not clear how the work and stupidly expensive... Seems just as an snobby thing.