I am someone who greatly benefits from no override button, because I know that I do the “yeah I knew that” thing with anki, but I can’t do that here, and it makes me more accurate.
I have no scripts and I do most of my reviews on my phone. I almost never make typos now because I have learned through making mistakes to check before I submit, and this doesn’t take extra time because I’ve become so accustomed to double checking that it’s automatic. If I do make a typo and fail an item it’s because I’m doing my reviews lazily, which wakes me up and makes me pay more attention, which in turn makes me focus on the remaining reviews properly.
I have failed burns by getting close, but not exact wording of meanings, and some such. This improves my accuracy percent though because I thoroughly know these items, so for that one error I will see that item a couple more times and not make that error again. Oh no, I have to review an item a couple more times and get it better reinforced. What a heinous injustice. 
If they add this feature I would abuse it, because I do on anki, and it doesn’t help me to do so. You can add the functionality just fine with userscripts but I don’t want it as a default because I know I would abuse it, and I’m glad it’s not there. Sometimes the teacher knows what’s better for the student’s learning, just saying.
If you’re getting a lot of typos, maybe that itself should teach you to be more careful or to double check your answers, and you should accept responsibility for that rather than reaching for someone else to blame.