If you have ethical concerns with this, but still love FP, just come over to OCaml. You get 80-90% of what you love about Haskell, and there is an established industry in many sectors. Big players here like Ahrefs, Jane Street, and, of course, Messanger and Facebook.
Tezos uses Ocaml; doesn't the same argument apply? (I don't agree with the argument, personally, and I'm a big fan of Ocaml... I just don't see how it deserves an "ethical concern" exception here.)
I love Tezos, personally, and think it's one of the more technically superior blockchains, and can see it having a better chance than other stable coins of having broad applicability to more than one or two industries.