Tbh mangadex is also very silly and picky about the gl tag and it could totally be a 'but she had a kid how could she like girls' angle as well
Because getting pregnant via IVF magically makes one straight.... Just think of all those poor couples who are in a state of tragic denial right now...
But yeah, after the ridiculous tag war over on Harushion's Uso no Tsukenai Otoshi Goro, I tend to expect them to refuse to put the GL tag on pretty much anything. They're super conservative with it, and readers will report a manga using it for the slightest bit of perceived non-GLness. (For context, the "main" pairing of that manga is a straight one, but the secondary pairing is GL, and is a motivating factor for the plot. The author and publisher of the series had the damn thing labeled as GL, and yet somehow it became a tag war with the translator continually arguing for the GL tag and everyone else getting upset and reporting it so it'd get removed because it was ONLY het romance in the early chapters, so obviously that meant the author and publisher were categorizing it wrong actually. Because you know, het romance doesn't exist in GL manga...
)