There are lots of examples of reformed white supremacists/nazis/racists. Like I said, it's hard work, not saying it's easy. My grandparents also escaped Europe, dropping family members off in any country that would take them before ending up in the US. The trauma is in my blood, so I get the impulse to want violent revenge. But I firmly believe that in order to learn anything from the horrors of WWII, we firstly have to avoid violence at any cost. Otherwise we're just making the same mistake they did, while trying to fix their mistakes. It won't work.
https://www.nytimes.com/2016/11/26/opinion/sunday/why-i-left-white-nationalism.html
https://www.nytimes.com/2018/09/10/books/review/eli-saslow-rising-out-of-hatred.html
https://www.bbc.com/news/stories-54526345
Those might not be the best examples, they're not particularly easy to find, because it's hard work and relatively rare. But it's possible, and I'd argue the hard work is worth it to avoid violence.
If it’s coming via FedEx, UPS, or USPS, I’d say no, unless for some reason they come into your house to help, then yeah if you’re generous. Moving company 100% yes tip. Normal corporate delivery service I’d say no unless they did something extra.