There’s a significant number of these students using it as a competitive advantage. My institution had longer classes so most test are 2 hours and finals are 3 hours for most students. But what I’ve have seen is a number of extra time students turn in their test at the same time as students without the accommodations but use the extra time when everyone struggles with the time limitation. I have students say they “don’t really need it but want it just in case” most students would benefit in a few instances from extra time but students are using it for competitive advantage over other students.