Most of the world's bandwidth is being used to stream Netflix and Youtube. I think the web will be OK if my site sends a network request for an 87KB script every now and then.
I never undertood the fuss with bandwidth and jquery either... it's only 30k once behind mod_deflate. To put it in perspective, vue.global.js is 463k or 104k once gzipped.
There are many reason not to use Jquery for greenfield projects now, but bandwith is not one of them.
The "fuss" is not about the specific numbers of bandwidth but more the mindset of not using more resources than absolutely necessary. And yeah, my breed who seems to care about this seems to be scarcer and scarcer out there but I promise, we still do exists.