Of course.
Anyone who has a strong position isolates part of the electorate, while attracting another part.
Trump had to defeat 16 rivals in this primary, which is still happening. To do that, he had to stand out.
Trump only needs 51% of the 57% who vote in national elections. This is about 29%. He is currently seen favorably by more than 30%.
I suspect those who support trump will passionately go and vote.
Trump went from a 68% “will never vote for” with Republican voters to 18% in the 1st 90 days of his campaign.
I would not worry about “likeablity” 9.5 months from an election when more then half of voters will not even start paying attention until mid Sept.