I don’t think any “grudge” is needed to speak the truth.
OK, where can we find the names and addresses of the reviewers for thousands of papers submitted to WORLDCOMP for all these 15 years? Why didn’t Hamid Arabnia publish the reviews for all these papers (after removing the authors’/papers’ identifies)? Why didn’t Hamid Arabnia address the open challenge and fake paper issues published at https://sites.google.com/site/dumpconf if his conference is not fake?
I read the following news at many places: https://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4GGNI_enUS531US531&q=%22csci+and+worldcomp%22
“You can cheat some people for some time but you cannot cheat everyone forever!”