jQuery still getting enqueued with InstantSearch
https://wordpress.org/support/topic/dont-load-jquery-2/
jQuery and jQuery Migrate still show up
Turns out this is because we rely on /wp-includes/js/wp-util.js which has its own dependency on jQuery.
This file provides the wp.template() functions that we use to help with rendering some of the autocomplete and instantsearch information.
This may be going away as an issue once Autocomplete 1.x gets handled, since templating has changed a lot between versions.
This will also be getting able to be forced with InstantSearch 5.x which is removing older legacy templating methods, which we still utilize.