I don't agree, but do believe there is some missing link between them
I have no evidence other than that Enryu can create life from Shinsu. Therefore to me a gender swap doesn’t impossible.
I almost 99.999999999999999999% believe this would be stretching a bit

... it's "said" (though very likely true) Enryu could create life, but him changing his gender, to wait for 'her' god, doesn't seem to have a reason actually.
Especially since he hasn’t been seen for how long after delivering the thorn.
From fandom, "SIU is planning for Enryu to occasionally appear in the later part of Tower of God.", this is in trivia (without sources/references), though I believe he will appear either after Baam reaches 133 or before that, maybe for the prophecy.
Also, he didn't call Baam his god (I doubt he knew it will be the "25th Baam"), from what we know he's a "messanger of the outside god"
but I feel like he wants to stay close to Baam so he can guide him personally without being discovered.
He doesn't need to, considering he himself had the strength greater than the most powerful in the tower (likely; guardians)
But again, I do believe there is some missing link between the Red Witches and Enryu (the idea due to there colour), but also since to me, Hwa ryun is more like guiding Baam and his friends, forward in the prophecy, like there are the irregulars that can alter the fate 'inside the tower', yes guides can't mess with Irregulars their own fate can't be seen (as per current infos), but till now, it all seems to go all well, such a power, maybe just the wildest of dreams... Red witches originated from/after Enryu...