Because building a site around the two is far from "modern". Maybe 10 years ago it was, but not now.
At this point there's not much good reason to use jQuery (and especially jQuery UI, which the site also seems to be using) over either vanilla ES6+ or an actual framework.
And Bootstrap can be alright, if you are using one of the latest versions, but this site is using Bootstrap 3 (for reference the latest is 5 and the transition from 3 to 4 was pretty big).
Tbf this site seems to have inherited all that from the wiki engine they chose to use, but it still chose to use that engine.
(Also at my job I work on an old-ass project that uses jQuery and Bootstrap 3 and I hate it.)
jQuery is old. No doubt. But it still serves a purpose if you have to maintain those old legacy websites. If it's using bootstrap 3 then it's old, I didn't look at the website.
Because building a site around the two is far from "modern". Maybe 10 years ago it was, but not now.
At this point there's not much good reason to use jQuery (and especially jQuery UI, which the site also seems to be using) over either vanilla ES6+ or an actual framework.
And Bootstrap can be alright, if you are using one of the latest versions, but this site is using Bootstrap 3 (for reference the latest is 5 and the transition from 3 to 4 was pretty big).
Tbf this site seems to have inherited all that from the wiki engine they chose to use, but it still chose to use that engine.
(Also at my job I work on an old-ass project that uses jQuery and Bootstrap 3 and I hate it.)
jQuery is old. No doubt. But it still serves a purpose if you have to maintain those old legacy websites. If it's using bootstrap 3 then it's old, I didn't look at the website.