I agree - it's similar to Q&A Schema which this forum has also implemented.
When Google decides to show a result with Schema (Q&A / FAQ schema being primarily carousel based), it's so prominent I doubt any other websites in the SERPs for said query get much of a sniff.
In an ideal world, no Schema like this would exist (from a webmasters perspective), but because it does -- I think you'd lose even more traffic not implementing, to joining Google's train of monopoly.
For that reason, personally, I think it's 100% worth it.