I know the frog mating calls for all species of frogs in my area and volunteer for the local DNR to survey frog populations in my county. It's a good indicator of water quality.
I took a random amphibian research class as an elective, loved it, and still do it 20+ years later.
They might be motivated by political views, fact checking, etc, but the subreddits I've seen discussing it (baseball, Iowa) are focusing on the fact that you need an account to see anything now. Screenshots from X would still be permitted; just not direct links due to the degree of interaction with the site required to view the material.
It's sound reasoning, in my opinion. X either links you to an actual source or is a short post easily captured in a screenshot.
Back-office college financial aid at a larger state college. Financial aid mostly disburses by batch process, so my job is to audit that. Some things, like external scholarships, are manual and require a quick reassessment of the financial aid package to ensure the student is still eligible for everything (if anything, loans need reduced sometimes per regulations). Some things require "professional judgement," like when a student is not yet 24 but claims to be independent due to unusual circumstances. There's more, but it's really just an accumulation of batch work, queues, and audits which require a reasonably good working knowledge of regulations.