Doing a proper translation takes time and most people frankly don't want to put the work in. It is easier for them to put it thru google, upload it and fix bugs if they can and rake in the likes. Doing a proper translation is months or years of your life of long tiring work. ( it took me 3 months of on and off work to finish Part time exhibition girl and that was a small game. Even then there was plenty of things I couldn't do because I hadn't yet learned how. and wish I had known to do before I decided to release it.)
I do wish everyone who did translations would put in the work but unfortunately not everyone has the time or patience to do it right and when they have an easy out they will go for it. that way they can get the game translated to play quicker, and quite frankly the translator might not of cared much about the story and just wanted a general idea of what was going on to get to a point they could wank to the game.
MTLs will never be perfect but if people were willing to dedicate the time to doing it right they could still make awesome translations. It is surprisingly easier than you think to do if you are willing to learn and put in the effort.