Show me ONE person who has ever posted anything on FR that ever indicates that they thought that way and I can show you LOTS of Christians who say that kind of thinking is wrong.
And Paul says so in Scripture too,. So those of us who adhere to Scripture as the final authority show you this.
Romans 6:1-4 What shall we say then? Are we to continue in sin that grace may abound? By no means! How can we who died to sin still live in it? Do you not know that all of us who have been baptized into Christ Jesus were baptized into his death? We were buried therefore with him by baptism into death, in order that, just as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life.
So give it up already.
Indeed...and Romans 7 and 8 enlarge beautifully upon that same premise.
Should sin increase so that grace may about? GOD FORBID! (That is what St. Paul said)
A proponent of the opposite idea that one has to sin more egregiously, that grace may abound more, was a Siberian monk whose debaucheries and evil helped bring down an empire.
I am speaking, of course, of Grigory Rasputin.