Sorry to barge in the middle of an already flaming discussion, but about the "suing part"... Highly improbable.
The authors of the (real/original, whatever word you want) themeselves admitted they took the Croft from from the phonebook, so they cannot sue anybody for that (is like Natasha Romanov, or Western-style Romanoff, cannot be trademarked/copyrighted) plus the game on purpose does not use the name Lara Croft.
Also the look (face) of the character is not really the one from the original games, but rather the one from Wildeer - which as I admit I myself discovered (not being a fan of Lara Croft) only not very far ago, is quite different from the ones in the original games that established the "Lara Croft" trademark.
I agree with you it is still recognisable the reference, but the reference being recognisable while being different, goes well under the "parody" label, which protects even under the USA law.
It is possible that Steam would have wanted to avoid the publicity of being the ones sued, but on directly suing the author, eventually only as scary technique, not because they would be sure to win - even because they would have needed to sue in his country, and as far as I remember, he is not American.