I agree the cake baking thing is kind of a minor issue - in principle is a pretty important issue but he doesn't want to make things worse, he is just going with the status quo of businesses serving people without discriminating based on race, religion, sexual orientation, etc.. I agree with GJ it is currently a "black hole" issue that would likely lose the election for a candidate.
The two big issues are his stances on the TPP and also that Hillary is innocent or whatever.. oh, and I don't think he is very good on immigration considering that it is currently a highly subsidized government program.
But he is very libertarian on about 90% of the issues. I will still probably vote for him. I would rather have a libertarian who is a little bit of a globalist than an authoritarian leaning nationalist.. although I think we may be better off with Trump than Hillary, I'm not 100% certain on that, but there is good reason to think he would be.
Nationalism may be preferable to socialism, nationalism is a reaction to all of the forced and subsidized multi-culturalism that is having a lot of negative impacts on western society. But nationalism is not optimal, it's not a solution, more like self defense.