It's not about "us vs them" as much as about dealing with inaction. There's a lot of problems to solve, political climate is increasingly tense, and going the centrism route is pretty much an equivalent of being that meme dog who says "This is fine" while sitting in a burning building.That almost reads as an "If you're not with us, you're against us" :/
The problem I'm having with most SJW's or "progressives" is most of the time they don't think past the current problem and what a certain "fix" will do in the future, or how it can be exploited.
A female friend of mine use to be all "we need to accept everyone in our country, we're rich enough to make it work", until she started working and having a house of her own near some less affluent people, now she still wants to help, but no longer "here" :/
I also think we should try to help, but first we need to get our own shit together and people coming here should adapt to our way of life and not just collect benefits and try to get us to adapt to them.
As for the rest, I partially get where you're coming from, but again, that's assuming the whole "collect benefits and forcing to get us to adapt to them" was true to begin with. I'm talking from perspective of migrants (not being an US citizen myself, yet knowing a lot of Eastern European people who moved there), and so far, it's anything but - being a migrant is an uphill battle where you work your ass off for lesser wages and benefits than native population, all while dealing with social prejudices at best and rather damaging discrimination at worst (stuff like "you won't get the job because you're not from here"). Same for the aforementioned "ways", as in it's less about "trying to get you to adapt to them" and more about just trying to keep their identity; in many situations, the demand to "adapt to our way of life" comes down to something as radical as asking migrated people to abandon their religion or forget their cultural traditions, and that's just not very humane in my book on a lot of levels.