They have no intention of playing by our rules. Sucks, but we need to accept it for what it is and act accordingly.
Even local schools and colleges that agree to setting up Confucius Institutes on school grounds. Indoctrinating students into fight anything it deems to be "anti-China".
And any org that employs 3+ party members shall set up a party chamber, host party sessions and even appoint a sectary.
This executive very likely is a party member, but that doesn't necessarily make this act party related, more and more Chinese have come to defend the 1989 event(if they know it ofc), as China is now on a peak, what the party did back then is gaining legitimacy and praises.
I won't be surprised if he had done this out of his own volition, and probably most of the people in his position would have done the same.
The HK protests were overwhelmingly disapproved and regared as "abject-lowlife riots", in some way, it reflects the public sentiment toward that 1989 event.