No worse thing for ux as the infinite scroll. As it breaks the native cmd-f/ctrl-f page search and makes loading progressively slow.
Another example is filtered goods at the local electronics store webfront. Progressive loading without ability to go directly to page 7 wastes my time if I know that what I need is there as each load of 10 items takes time. But of course this pattern increases some shitty OKR in time-spent-on-website. Hate this.