I’m sorry but “freedom packing” sounds so PC I will never be able to see the phrase without sneering. Sounds too much like Freedom fries.
I myself tried a little slackpacking and didn’t really see too much advantage. I was only a little slower with my backpack and as the Ferryman says, you are giving up a little independence when you start relying on others to cart you and your stuff around.
And if you happen to get lost…
That said, it all comes down to personal preference and experience. HYOY.
JJ