Sure. There are also many cases where any kind of speech can be illegal, depending on the context and content of the speech. That does not mean that form of speech is not constitutionally protected.
Legally, whether photographs are speech seems to come down to whether they are taken with communicative intent or not.
This is within the well known (and tested) limits of freedom of speech... which neither TikTok or WeChat software were found guilty of (with or without due process).
> Yes, all photography is speech and any form of photography should be allowed.
> If not, who decides which photography is allowed or not? Will I need to get a license from the government before I publish a photograph online?
You see the problem here, don't you? There are many cases where a photograph can be illegal.