Just because they support an issue, doesn’t mean that it’s the one, above all others, that drives Latino voting decisions.
I’d like to know what % of Latinos are single issue voters on immigration. My recollection from past elections is that it isn’t all that high, and they do tend to put economics first.
They don't have to be. Are you a single issue voter on guns? yet, would you support a candidate who was pro-gun control? Likewise, for many Latinos, immigration is not their most important issue - but they also feel that opposition to immigration is racism against Latinos personally. They may be wrong in that view, but that's what they think nevertheless.