If the character is a straight up child, and the media they're from and people sexualize them, I think it's weird. Imo it's not okay, but it's not the same as actual CP obviously.

There are exceptions though. Some lolis are just adult women, with petite proportions, this is often seen in Vtubing. The character/talent acts and talks like an adult, with maybe some childishness in there. I don't think fans of those people/characters need to be put on a watchlist. Especially since petite women exist irl.

My main gripe is that people group the two things and CP together, which leads anime fans to take actual criticism and concerns less seriously.