obviously it is wrong. you are creating difficulty for someone else, not only yourself. don't they feel guilty? but at the end of the day, half of the problem is the system which enables gambling - enabling addiction, wasting money, goes against the teachings of Allah most of all, you can argue but do some research and realise whatever rule Allah tells us to live by, is best for us, just have an open mind. don't get me wrong, they are also wrong for enabling their desires and getting money unlawfully, at the expense of other humans but also against Allah.
Don't you think you're angering Allah by hurting your fellow brother, who was created with the same love and perfection as you?
you may think its just a ranked game but imagine the same thing happened to you, and im not talking about just ranked, this is about your etiquette with your friends, family and people who you interact with.
in Surat Ar-Rahman, Allah says in ayah(verse) 60 "Is there any reward for goodness other than goodness?".
in surah Ahzab ayah 58 (And those who hurt believing men and believing women without their having done anything (wrong), they shall bear the burden of slander and a manifest sin.)
that it is forbidden (Haram) to cause any pain, harm or hurt any Muslim without a justification recognized by Shari’ ah.
In a hadith:
it was asked to the Prophet of Allah(Peace Be Upon Him):
"O Messenger of Allah(PBUH), what is backbiting?"
He(PBUH)said:
"It is when you mention something about your brother that he dislikes"
It was asked:
"But what if what I say about my brother is true?"
He(PBUH) said:
"If it is true, then you have committed backbiting about him, and if it is not true, then you have slandered him."
in another hadith:
Sahih Muslim (2581)
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The Messenger of Allah (blessings and peace of Allah be upon him) said to his companions:
“Do you know what bankrupt means?”
They said:
"Among us, the one who is bankrupt among us is the one who has no money or wealth"
He said:
“The one who is bankrupt among my ummah(people) is the one who will come on the Day of Resurrection
with prayer, fasting, zakah(alms tax)
but he will come having insulted this one,
slandered that one,
consumed the wealth of this one,
shed the blood of that one and beaten this one.
They will each be given from his good deeds, and if his good deeds run out before the scores have been settled, some of their bad deeds will be taken and cast upon him, then he will be thrown into Hell.”
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from one of the scholars commenting on a Hadith:
“Whoever harms [others]”
“Allah will harm him”
“Whoever causes hardship”
“Allah will cause hardship to him”
Al-Qaari (may Allah have mercy on him) said:
“Whoever harms [others]” means harming a believer, and being the first to stir up trouble.
“Allah will harm him” means: He will requite him for his action, by way of making the punishment fit the crime.
“Whoever causes hardship” means by opposing someone and showing hostility towards him,
“Allah will cause hardship to him” means He will punish him.
End quote from Mirqaat al-Mafaateeh (8/3156).
Secondly:
The questioner says
“but people are harming others at present, and Allah is not harming them”
; this may be answered in several ways:
-1-
There is nothing in the hadith to suggest that the requital for this harm must be in this world; rather the basic principle regarding requital is that it will take place in the hereafter, which is the arena of requital, although Allah may hasten whatever requital He wills to whomever He wills of His slaves. Allah, may He be exalted, says (interpretation of the meaning):
“And never think that Allah is unaware of what the wrongdoers do. He only delays them for a Day when eyes will stare [in horror]”
[Ibraaheem 14:42].
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in conclusion be very careful for how you treat people, since one day, out of nowhere you will be perceived with an affliction(in this life or the next) that you will ask yourself
"why did this happen to me?"
but, at the end of day, Allah still says:
But whoever repents after their wrongdoing and mends their ways, Allah will surely turn to them in forgiveness. Indeed, Allah is All-Forgiving, Most Merciful.
Surah al-Ma`idah 5:39