First, I agree with you, have heard this said. So, off to my rebuttal 1) "No, at the worst, you could say I am wrong or illogical. You should know that I am a small group. Most believe you, whoever you are, can be born again calling upon God. Me? I believe God wants to draw all men. The fact that all men are not drawn does not mean, to me, that God fails. He will save all He can. So let me ask you (hypothetical unsaved), is there even a desire? If there is a good and loving God, who has gone to great pains to save you, even the sacrifice of His Son, does this motivate you? Is there any value to you, in A being loving you enough to have done such a great thing?" Right now, "your" response determines who you are. Romans 10:20,21 Hebrews 3:15
"None of us can save the whole world, and in fact cannot save ourselves or even one other. Romans 3:23 All of us have sinned. All of us fall short. The only thing you can do, is come to God, on His terms, yourself, by what He has done. There can be no blame, today, if you hear the good news, that He cares. That He did something to ensure salvation of all who desire it. Jeremiah 29:13 Everyone has to take care of themselves, it isn't me or you that saves anybody. We cannot. Only God saves. Your concern for another is commendable, but if you use it as an excuse to dictate terms of something, rather than seeing your specific need in sin, it is a choice against the very thing He died to save you from. Again, what does genuine grace, demand that you or I should do? What motivates you in your life? Grace, love and mercy as well as incredible compassion, motivate me. What would God 'have' to do, that He hasn't already done? You need, I think, to ask yourself what has kept you from Him until now. What exactly is it, that would have anybody spurn grace?"
Love either is accepted or spurned. When proposing, I've been spurned by a girl or two. She was, I suppose, looking for something 'better.' 1 John 1:5 God is light, in Him there is no darkness. 1 John 4:8 God is Love. Not just an idea of love, the very fact of Love, the definition of it. Without God, there is no love. Can we spurn Him so easily? What is left if we spurn such a great love? Mark 8:36 Hebrews 2:3
I have heard it on TOL, however, I never give them the excuse. The above is important toward that conversation. It doesn't matter 'what I think' but rather what God says. Never let someone draw you into a conversation over excuses of not responding to the gospel a certain way. It always is "I don't want to" and neglecting so great a Salvation and Love. "Today, if you (unsaved) hear His voice, do not harden your hearts. What does grace and the definition of Love in the universe, call you to do?"