Horrible take. I absolutely do not give a fuck about arbitrary internet points and would like to see an open discussion without a majority bias downvoting someone into oblivion just because they disagree. For example, your comment will not be hidden just because your comment is being downvoted.
The only thing bringing profile karma to Lemmy will do is attract botters to inflate their credibility. Those could also be used to downvote others so the botter’s comments and posts are pushed to the top.
Again, horrible idea.
Of course you can see the comment’s individual karma. But, if you got my profile or yours, there is not accumulated karma.