since obfs4 is easier to detect
What do you mean with “obfs4 is easier to detect”? The only case I know off censors detecting obfs4 is by blocking anything that looks random, and AFAIK no censor has run this kind of mechanism for long I assume because it blocks too many other things.
A paper related to this “block random looking things”: https://www.usenix.org/system/files/sec23fall-prepub-234-wu-mingshi.pdf