Your second argument is "everything affects everything else". Using that argument we can prove that we're all mass murderers for keeping our thermostats at 70 degrees. One reason this way of thinking is so useless is that it fails to single out actual murderers (i.e. the person who pulls the trigger).
It's what drives engagement & wins votes.
One side views abortion as a moral sin. The other thinks that access to healthcare is a value and have a moral obligation to fight for the rights of women.
There are a bunch of issues like that.
For me right now my LGBTQ community is being used by Republicans as an election issue. An example where one side thinks (or pretends to in order to win votes) that it's some political issue, while I and many others feel like it's a direct attack on our lives akin to racism & racist jim crow era laws.
How about all the people who view abortion as a sin but think it should be legal anyway? You know, like Joe Biden and every other liberal Catholic.
You're just spitting out talking points.
But even that example still mixes morals, values, & politics. Joe Biden values legal autonomy & access.
And it is a fundamental campaign issue. He would not win the Dem primary if he was against abortion. You can't un mix the two it's blurred.
[0]: https://www.youtube.com/watch?v=4EXVrzOACv4
Edit: It's also a lot easier to stay "apolitical" when you don't have any skin in the game (or rather, don't think you do). When your rights don't feel threatened, it's really easy to go with the status quo.
You do not get to take part in any community without having a political stance - being part of a community is communicating that you agree with the morals and values of the community and wilfully accept them - thats the basis and general agreement of a community, it's what differentiates a group of people from a community.
Now, Im not sure that turning a blind eye to the consequences that this has is inherently wrong, that surely depends on what impact the concrete political/moral/ethical stance has, but I disagree with the notion that, really, anything is apolitical. In context, everything is political, and we have to live with the notion that anything we do has impact on other people, as long as the consequences of the the thing we are doing is visible to other people.