I think that is an unfair and untrue assessment—true Christians have the distinguishment of being very generous in their tipping, gifts, charitable giving. In general, as soon as they learn what God’s word says on the subject of giving, among other Christian works, they do it, in His power. God has His ways of bringing His own to action in accordance to His will.
One waiter I worked with said he'd probably be more willing to read a tract if the person left a decent tip.
Too many christians actually think that them giving a tract IS part of the tip.
I was out the day before Christmas Eve one day, at Olive Garden. I had a delightful black girl for a waitress. This was about 5 years ago, and though I only had this waitress once, I still remember her. Since it was Christmas, I doubled my tip. We said our goodbyes and Christmas wishes, and left. She soon came running out, when she saw her tip, and profusely thanked me. I simply wished her a Merry Christmas.
Now I didn't leave a tract, but if I did, do you think she would have been more receptive of it?
The Bible tells us to be blessings to others. I think something as simple as a smile can be a blessing to someone.
I'd like to think that that tip was a blessing to that girl, if doing nothing more than bringing joy into her day and the season.