Usually deleted answers are not particularly useful, which is why they were deleted. If they were hidden (compacted to the first line) by default with a JS [+] to expand them there would be less noise for 10K users.
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I however agree that deleted answers only adds noise. As you see in the Related list on the right column, the same problem was discussed before a lot times. Either by removing them from the view, or just pushing them to the entire bottom. Most of those questions got a lot of votes, so there's certainly support from the community.
Bill made a very good point in his comment: make it a preference. The <10K users already don't see them, so this logic is already implemented in the business/view side. Implementing an extra preference seems little effort for the dev team and big favour for the >10K community.
I personally, however, got used to them. I just scoll ahead. But I can find myself in your problem when I went over 10K some months ago.
I kind of like seeing the deleted answers, sometimes they're interesting to read and I think if there were a method of expansion I'd be frustrated at having to expand them all the time just to satisfy my own curiosity/nosiness.
The deleted answers are well highlighted, the different colour makes it easy to differentiate between answers worth reading and answers you don't need to bother with.
For those reasons I disagree (-1).