A wall is a rhetorical prop, how are you not seeing that? Increased border security, sure that might be reasonable in a general sense. However, then the questions are from what level and to what level. We've been increasing the number of agents on the border every year for a long time--it isn't making much of a difference. Trump isn't talking about that though, he's just giving you a prop. His whole "Mexico will pay for it" is just another part of his carny call.
If you think something is unethical and do it anyway you are, actually, an unethical shitbird and hypocrite. You're simply wrong on that point.
You're also wrong on the point about how he conducted his business. Trump had a choice with putting his name on mens wear. To simplify, he could slap his name on a cheap low quality product to make fast cash with a high profit margin; or he could put his name on a high quality product with a lower profit margin. He chose the former despite the fact that doing so went against his heartfelt opposition to outsourcing

rolleyes

rather than the later which would have allowed making his clothes here in the US like some higher end clothiers do. Again, Trump chose to make a cheap product and chose to have that product made abroad in sweatshops. That's a choice he wasn't forced into and for which there were options.
You assume that I assume he's sincere. However, since I'm not a fucking moron, I don't think he's at all sincere.