Labor unions in the us seem ... kinda wobbly and leaderless. Their % of workers has declined in the US, and I'm not sure how much the average citizen sees them as someone to listen too.
There was also the many precedents set during the height of judicial activism, which is why we, arguably, don't have a rule of law anymore today, but mostly it was the breaking of PATCO by Reagan.
The average tech worker in America is delusional enough to not want unions yet.
Source?
I've asked him to explain how this can be and he cant, he just accommodates the contradiction with a lot hand-waving.
So I think that there are enough Trumpers that are OK with unions to make a majority that support unions.
Basically, Trumpers can choose to believe anything they want, anytime they want, for any reason they want, or for no reason at all.
They do that in order to be able to rationalize their irrational, and often detestable behavior to themselves.
This isn't true for all types. Like welders and pipe fitters tend to like unions, but by and large if unions don't exist it is because nobody (including the workers) wants them.
They also don't really like what they perceive as "leftists" either. They much more strongly prefer to identify with somebody like Trump then somebody writing for a Marxist online website.
There are exceptions to this, of course. Like if you live in a large city, especially predominately "Blue" area you are going to see a lot of people running around trying to advocate for unions and such things.
But that isn't normal for the rest of the country.
There is a lot of literature spent discussing this sort of thing... Why American workers are largely very conservative.
Back in the 1960/70s when student groups went around in working class areas of the country and tried to organize labor... a lot of them ended up hospitals as a result of their efforts. This is why Marxists don't go around making murals about the greatness of the working men anymore.