Preface: I realize after writing this I possibly came off as one of those, "just learn to code" people. I'm not. People should only join the field if they're passionate about or at least enjoy it otherwise they will burn out fast. With that said, I don't think the field as a whole should be written off by those who enjoy the work, and CS degrees are as useful to software engineers as physics is to a mechanical engineer. Back to the main discussion.
I think we just have different views on where AI is headed and what it is capable of. Neither job is going to be replaced any time soon by AI IMO, but I'm pretty certain a UPS driver will be replaced much sooner as it's a fundamentally simpler problem to solve.
For comparison, software engineering is critical thinking turned up to 11 with tons of ambiguity and guesswork as to what people actually want vs what they're asking for. It's very people and communication focused despite what stereotypes might portray, and you often have to figure out and tell people what they actually want instead of doing what they say they want. Automating software engineering would be more like automating an entire supply chain as opposed to one part of the supply chain (delivery driver) because there's so many different types of software engineers out there. Not to mention you need software engineers to automate software engineering.
As for pay, that $170k is the absolute top end for UPS drivers and you have to work your way up from warehouse to a delivery position. Software engineers top end is generally around $500k (you can get up to $1 mil but it's rare enough I wouldn't consider it fair for the point of this conversation), with starting being ~$95k for most new grads. Absolute worst case scenario you go work for the government for $70k and earn a healthy pension with dope benefits, regular raises, and amazing work life balance.
Student loans are definitely a consideration and can be high risk, but attending a community college for your first two years before state school you can get out under $30k of debt. My total tuition cost for 5 1/2 years of college was <$20k in California. I was fortunate enough that my mom paid for my education, but I could've covered the cost with loans and paid them back by now. This is all ignoring that software engineering internships regularly pay in excess of $50/hr making it possible to put yourself through school while working summers just like your grandparents did.
I agree somewhat with your concern over the uncertainty of the world, but I figure no one really knows where we're headed so I might as well do what I love and make as much money as possible in the meantime. Neither are bad career options IMO and trades can be awesome, but it's important to consider the long-term risks that often come from certain occupations including those sitting at a desk all day.