Star Wars - The Old Republic, it turns out that they made Revan canonically a white, unhinged dude, who married Bastila
Then it may please you to hear that Star Wars - the Old Republic is not, and never was a cannon.

Nor is KotOR btw ... at least not until that promised remaster will be released, that should canonize that story ... wich may (but this is purely my own speculation) also mean that we dont get option to pick our Revan this time.

If you don't want something to happen, don't give players the possibility. Problem solved.
Agreed 100%.
but they backpaddle and recon a lot
I heared there are some strong signs that Mass Effect 4/5 (depends, if we count Andromeda or not) ... will also follow only one possible end from 3 and ignore the rest.

It sucks ... but its common practice in gaming industry ... wich kinda sucks even more. :-/