We hear it over and over again. We recall how Bush was so disliked in every corner of the world, or at least that's what they told us.
Based on what? We don't know since polling is probably very difficult. Besides, do you seriously think that people around the world spend their time thinking that much about US presidents?
Nevertheless, they tell us that most of the world was rooting for Kerry in '04, or Obama in '08 & '12 and Clinton in '16.
Again, it is a partisan opinion rather than an objective assessment of world opinion
Based on my experience, I don't recall this hatred for Reagan or Bush or even now for Trump.
Trump's presidency is a work in progress. It will take 20 years, at least, to measure his achievements. As they say, time will tell.