With that being said, your definition of stringent believers sounds more libral than the bible's definition.
stringent believers genuinely repent of their sins, turn from their sins, and try their best to be led by the Holy Spirit.
Here's what the bible has to say about so-called Christians who continue in the ways of the world.
1 John 3:
8He who does what is sinful is of the devil, because the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the devil's work. 9No one who is born of God will continue to sin, because God's seed remains in him; he cannot go on sinning, because he has been born of God. 10This is how we know who the children of God are and who the children of the devil are: Anyone who does not do what is right is not a child of God; nor is anyone who does not love his brother.