Just pick up a comment under his status of ppl he did not block and leave a reply, you can also mention him easily, the only difference is he will not be able to see it but that is beyond a point, public should know.

https://twitter.com/aschatria777/status/1238824510196985857

- aschatria777

https://twitter.com/aschatria777/status/1238824062325067776

- aschatria777