I am happy to say that I believe this is untrue. As C.S Lewis explains, Christianity is a religion of moderation, not prohibition. The aim is not to avoid life, but to develop sufficient self-control that one can control one's lower passions. Why is it necessary to control the lower passions? Because Christianity says that a person's highest motivation should be love in all things. It is a religion of love. The Christian should aim not so much to avoid drinking alchohol (for example) but to ensure that the need or desire for alchohol never stands in the way of them acting out love. Similarly, never should greed, jealousy, envy, vanity, power hunger, or any type of selfishness be such a powerful passion that it would stop one from acting out of love for someone else.
Thus the aim is that love is the highest passion, and that all others are not so much eliminated, but rather always take a second place.
How does one control one's passions? Certainly not by avoiding all possible situations where one might be tempted. This would be a type of spiritual death (if it was even possible). Rather one should experience the world and use it as the training ground to gain control of oneself. Now this may require a strategy that includes avoidance of some situations sometimes. For example, if you know that you cannot handle your drink, then you may need to take actions to restict your intake, or if you cannot then to perhaps avoid these situations and work on developing your strength until you can. Thus your experience in the world reveals your weaknesses and then, with prayer and preparation, offers you the opportunity to develop your strength and then test yourself against it again.
In relation to this matter, The Great Gospel of John ([GGJ 7.156.4]) records Jesus as saying the following:
"Man can indeed withdraw himself completely from the world like the hermits of the Carmel and Zion, who do not look at a woman and whose scanty food consists of roots and all kinds of berries, wild honey and carob beans. Also they castrate themselves for the sake of the Kingdom of God, because in this way they cannot fall into temptation to transgress against a law of Moses. Therefore, they do not have any possessions, no parents, no wives and no children, even no manhood. They life in wild canyons, so that they would not be tempted by the beauty of the luxuriant fields of the Earth. They do not talk with one another to prevent that someone would say something that would offend him or his neighbors.
Under such foolish life conditions, by which they are disconnecting themselves from the reality and protect themselves against the possibility to sin, they surely are keeping the laws of Moses, but for whose benefit? I am telling you: that does not help them in the least, nor other people. Because God did not give man different powers, abilities and talents to let them slumber as a hermit in a little hut or cave, but to, according to God's revealed will, be active, and thereby be of benefit for himself as well as for his fellowman."