Even if the percentage of radical muslims is small, (which I don’t believe) the total still amounts to millions of radical muslims.
There actually was a poll taken in Muslim countries around the world.
Radical Islamists were around 10% with another 20% or so passively supporting.
If the 10% figure is true, that is not a tiny number. It means that over 100,000,000 radicals want to kill, convert or enslave everyone else on the planet.