Much of the time in those comments Trump goes after the "alt-left" and he comments on the right too. That one line is buried in the comments. It was not his primary point. Also he sd that people who showed up the night before to protest statue removal, all good and well. but we ALL know that 'the Jews will not replace us" was the proud boys et al, come to start great trouble.
https://www.politifact.com/truth-o-meter/article/2019/apr/26/context-trumps-very-fine-people-both-sides-remarks/