Maybe it's to do with what a literal dogwhistle is. I can't really make heads or tails of this, but that's maybe just because my brain is on a completely different wavelength. Like dogs can hear specific frequencies humans can't. Maybe trumpists hear certain things in between this word soup that actually makes sense on some level.
Or maybe he's just a senile old man and his followers are incapable of critical thought when it comes to him.
Join a club, try to find others that are like-minded. I've got friends who are recent parents and it made me have a look at my social circle and figured it was time to expand my social circle.
Lots of people are feeling lonely simply because they don't know where to meet any new people. I'd say see if your place of residence has some sort of meeting center where you could organise something. If only one person shows up it might be a success already.