Islam is strong opposition in both cases; with the recent "LGBTQ books in school" lawsuit at SCOTUS having Islamic parents in the plaintiffs. Let's not stereotype this as a purely Christian issue.
Islamic people also don't want to bake cakes for the LGBTQ crowd. They're with the Christian baker there.
This is may be true of many Muslims, though they should probably factor the possibility the current administration despises them as a demographic much more than it despises LGBT people into their decision making. In any case, views on Christian bakers don't seem to be a particularly good reason to endorse the behaviour of Trump or believe that international trade is a pissing contest, or mass incarceration without due process or many other things the current administration is far more interested in than SCOTUS lawsuits, and I don't think many of Trump's voters backed him out of adherence to Islam...