As far as I understand, the advantage of Lightsail is that you get access to the rest of the AWS services, NOT it's price or pure simplicity.
lowendtalk.com can show ya what Lightsail is competing against, IMO more BW, SSD Space and less aggressive throttling are needed if they are to compete with even the higher end of that market, it comes off as a stingier knockoff of Digital Ocean & Linode.
The obvious followup question: is lightsail the same interface / setup as normal AWS so that this would indeed work? or is it some sort of vastly simplified separate thing?
You choose either the base OS, or an app stack (like Nodejs, or LAMP), then the price you want to pay, then name the machine.