so the question was asked. does it serve a purpose? time will tell i guess but i use compact 3/8 ratchets quite often. they work great on allen bit sockets and in confined spaces in sizes above 1/4 drive range without extra adapters. i have no illusion that i will use it every day but i have no doubt it will get used.
as was said, sometimes you need some "umph" to get something to move and once it is free far less effort is needed to turn it but maybe not loose enough to turn by hand. or maybe not enough room for a full size ratchet to be easily used. if you search for a used one, they are pretty scarce so the value should stay up. i watched a gently used one go for over twice what i paid.