Keep in mind that Li fell out with Beijing and have cashed out most of his assets in the Mainland over the last several years.
There is no way that the following phrase, formed by the the end characters of each phrase in the ad, could be a coincidence.
因果由國 容港治己 義憤民誠
The only slightly questionable word choice is 由, but as the phrases are supposed to be read as stanzas in a poem, I think liberties can be taken in composition.
It's like a compact puzzle or "steganographic joke" - intelligent, elegant, satirical and even humorous in a way.
Constructing these interlocking phrases, one "public" and the other a "private" message for those "in the know"; getting the right number of characters and dots; even using his own name as part of the message.
I don't know anything about this billionaire, but I appreciate the effort that went into this form of protest, it's a work of art.
A lot of big corporations/wealthy people had ads on HK newspaper front page explicitly condemning the protesters. Li Ka Shing could have done the same but he didn't.
Try searching "李嘉诚发声" and you'll get a message saying "According to relevant laws, regulations and policies, this page is not found"
They want to paint the protesters as pro-HK independence but in fact this is not one of our five demands.
And of course they block all the stuffs that make the HK gov and police look bad.
I have also noticed sharing videos WeChat seems to be on whitelist mode 2 nights ago.
Speculation is that there were heavy traffic for sharing globally resulting in all videos on WeChat were temporarily shadow banned until individually approved.