Imperfect But Still Salt And Light

You are the salt of the earth. But if the salt loses its savor, how can it be made salty again? It is no longer good for anything, except to be thrown out and trampled by men. You are the light of the world. A city on a hill cannot be hidden. Neither do people light a lamp and put it under a basket. Instead, they set it on a stand, and it gives light to everyone in the house. In the same way, let your light shine before men, that they may see your good deeds and glorify your Father in heaven. (Matthew 5:13-16 BSB)

Quoted from the following twit:
QUOTE
In debates and discussions with Muslims, you are enlightened with the following:
There is not a single 'true Muslim' even though there are 1.8 billion of them.
There is not a single 'pure' Islamic country.
A perfect Islamic state is yet to be founded.
Ayatollah Khomeini was an enemy of Islam.
Pakistan, Iran, Sudan, Afghanistan, and Nigeria…these Islamic states do not follow 'real' Islam.
Saudi Arabian Islam is corrupted.
Not all Sahih hadiths are Sahih.
Non-Muslims quote out of context.
Tyrants and dictators rule Islamic countries; they have no idea about Islam.
The clergy/Mullahs do not know 'real Islam.'
You cannot practice 'real Islam' in Islamic Paradises like Pakistan, Bangladesh, Saudi Arabia, Sudan, Malaysia, Nigeria, Iran…etc. You must not use these countries as examples of Islamic practices.
Wahabism is not 'real Islam'.
Al Qaeda is not 'true' Muslims.
Talibans are not 'true' Muslims.
Shias are not 'true' Muslims.
Sunnis are not 'true' Muslims.
Ahmedia/Qadiani are not Muslims 
ISIS are not Muslims
Boko Haram are not Muslims
Islam is a Religion of Peace.
~ Sehr Umeed
5:28 AM · Dec 15, 2023
UNQUOTE

So the reason why Islam failed to achieve anything is because there is no perfect Muslim and there is no perfect Islamic country.

What a contrast it is with Christian and Jewish countries. Imperfect Christian and Jewish countries can still be the light of the world and the salt of the earth, bringing science and technology and progress to the world.

But he said to me, "My grace is sufficient for you, for my power is made perfect in weakness." (2 Corinthians 12:9a NIV)

I can do all this through him who gives me strength. (Philippians 4:13 NIV)