this tepid simulacrum of support (not even an endorsement!) doesn't count.
's language on this
seems to be wrong
So, you're arguing that Lincoln played a pragmatic game of restricting slavery's spread that had the somewhat unexpected and un-sought-for side effect of abolishing slavery as soon as was possible. A very valid argument, but I still don't think that that makes Lincoln a " quite determined" abolitionist, more of a "quite determined anti-slavery-expansionist" who happened to abolish slavery, in large part accidentally.