Yikes, was just looking back over to see if I missed any posts, especially any baby goat or baby bunny pics, & then noticed I had posted laughing icon on this one...well, this proves I really should wear my glasses when using this darn phone. Anyway...the appropriate icon is now selected. Sorry!
I too have taken advantage of a few free deliveries with the Tractor Supply rewards. The people that deliver are on a free Lance app called Roadie, sort of like Grub Hub, Doordash, those types of gigs. They use their own vehicles. Here's the thing...when they get a possible gig, all they see is the weight of the load & how much it pays & the address where it goes...that's it. They get no details as to what exactly the load is. It might be anything from a 50 lb bag of feed, to a small lawn mower tire, to a pair of gloves. Plus, they are not given any information like how it is, or is not, packaged. Nor do they know if they'll need assistance or anything like a hand truck to unload or carry it. I know this because I've done a few Roadie app gigs myself.
Now, I'd never wear flip flops, no matter where I was, I hate the damn things. So yeah, that is totally inappropriate attire for driving anyway, they tend to slip when using gas & brake pedals. Bad, bad shoes!
But in defense, once a person has to click to accept a gig, then they actually see what they're supposed to deliver, if they Do decide to change their mind & Not proceed with the gig, they won't get more gigs! There are a few major problems with how these apps work.

Why they don't give people more information is beyond me, because it would not be hard to add that to weight, dimensions & location the package is to be delivered.
I understand your frustration completely, but I also can relate to the driver. If a driver does try to get more info, not only is it practically impossible to get that info over the phone, but there are many other drivers ready to click on & get that gig. Then once you've clicked & gotten it...you're sort of stuck with it or harshly penalized for rejecting it. I get ticked off at the designers of the app...it's been suggested numerous times by many, please add what exactly this product is, instructions for how it needs to be transported, especially if it is upright & let folks know if it's best as a 2 person delivery, or special equipment is recommended. Seems like no one does the logical thing anymore. So someone designed a cool app, hurray...now make it more efficient!