@hanen, thank you for pointing out this issue. If I would make one recommendation is that you try to personalize your greetings to new users in order to make then special.
Many people do consider duplicated welcome messages comment spam and, when something is in doubt, it's better to err on the side of caution.
Also, I invite you to join the @steemflagrewards Discord. We are a group of fellow abuse reporters and fighters that try to take care of each other. We also have a postpromotion channel for abuse related posts. I had shared it on your behalf.
Ah thats great! I didnt know that it exists :) Will join it now !