If your commute is under 10mi, is flat, you don’t need to carry anything on the bike, and you don’t want fenders- then those bikes may work.
On the Amazon bike-
There are no eyelets for a rack or fenders.
There are no gears to help with hills.
There is only 1 brake when you need to stop quickly in traffic.
I didn’t even look at the other. Do you ride and enjoy a stripped down optionless singlespeed right now? If so, then the Amazon would match quite well with what you have.