Perhaps they didn't know about the pay gated translation engines, hence tge reason it isn't worth using it, unless one has the pay gated versions
Meh, the base used to be Google, but the author dropped it & put Bing in its place as the basic 'free' option.
To be fair, Google was a bit better. But still, it's not like it didn't produce the usual poetry either. Though at least Google never messed up the TL right from the get go, e.g. the start menu where instead of 'Continue', you often get 'Conti New' or something with Bing.
All 'n all, you know what you're getting if you go with a straight-up RAW Google/Bing MTL.
Then again, I've played many a game that way and well, it gets the job done (for most games). Some turn out better than others, but oh well, those that turn out terrible you can just give up on (or pay up of course, for better TL quality).
I've honestly seen many MTL's here on the forum that were a lot worse than a free MTooled game.
Most important of all though, MTool generally doesn't randomly break stuff. If the TL'd game runs and nothing seems immediately broken, you can generally be pretty confident you're good to go 'till the end.