I don't care about the diversity stuff. Thats normal. Thats not "left leaning" IMO. Inclusion is not the same thing as political agenda.
Of course it is. The only reason inclusion happens is because a lot of people fought hard for a long time advancing the political cause of civil rights and overcoming centuries of institutionalized exclusion. Women's inclusion, racial inclusion, LGBT inclusion, all of it happened because of political activism by millions of brave people who spoke and marched and resisted and sometimes died for their right to be included, and political action by legislators who worked to change the laws to acknowledge that right.
There is moral right and moral wrong... and then there is political activism and agendas, which are two totally different things.
No, they aren't. At least, they aren't always. Politics is a means to an end, a mechanism for advancing a goal. Too often, that goal is merely the advancement of some party's power or some politician's wealth, and that's the kind of politics we disdain. But politics can also be used to pursue very moral goals, like fighting discrimination or ensuring health care for children or keeping lead out of the drinking water.
There is a difference between showing life in all its types and styles, and being put down / preached at by the television that you love. I can totally endorse one.... and completely feel insulted by the other. As always, YMMV.
And why do you assume that just having a character express a point of view has to be preachy? That doesn't make any sense. Most works of fiction have characters expressing multiple different points of view, coming into conflict with each other. Having a point of view is just part of characterization. And the show has never held Oliver up as an infallible role model, so putting an opinion in his mouth isn't the same as preaching it at the audience.
I mean, Oliver is the mayor of Star City. It would be awkward and unnatural if he never had a position on
anything political. It's quite possible that Diggle, say, could be more conservative, and he and Ollie could have some good, smart debates that explore both sides of the issues.