Being tolerant of intolerant speech, leads to intolerant behavior and intolerant laws. When someone suggests that it is acceptable that there are groups of people who it is acceptable to discriminate against, they are encouraging intolerant behavior against those people.

In this case, it's mild, seems like a statement from the person that they will delete their related tweets, have realized they were wrong in their younger years, etc. would probably be enough. It all depends on extremes.

So yes, I agree that speech and actions are not the same. There is a social response to intolerant speech, and there is ideally a legal response to intolerant actions.