It is worth noting that people have explicitly claimed to be following strategy 2 here. Edit: This is far from the only example; just the one I found by searching for “upvoted to”.
It would be also interesting to check the difference between comments on quotes threads and comments on substantive posts—at least one person has proposed that quotations are disproportionately subject to strategy 1 voting over strategy 2.
It is worth noting that people have explicitly claimed to be following strategy 2 here. Edit: This is far from the only example; just the one I found by searching for “upvoted to”.
It would be also interesting to check the difference between comments on quotes threads and comments on substantive posts—at least one person has proposed that quotations are disproportionately subject to strategy 1 voting over strategy 2.