Yes. With monthly you are either using the software and paying. Or not using it and not paying. You wouldn't likely use it for one month and then have a month off before paying again. So there is no stress to optimise costs.
Well... I can tell you that engineers are not particularly stressed about turning off EC2 VMs they aren't using, or ever ever ever deleting useless junk from S3.
When it's someone else's dollar... most people don't sweat it too hard.
Statements like this make me feel like I've stepped into bizarro world,.. because I obsess over that.
To be clear though, this isn't wrong. The number of times I've gotten into shouting matches with people over deallocating cloud resources is not insignificant.
This might make sense for services like aws but not user software..