Does Ellen g white say drinking tea and coffee is a sin?

Tea, coffee, and caffeine are not strictly forbidden, just discouraged. Following is another view:

Do you not know that those who run in a race all run, but one receives the prize? Run in such a way that you may obtain it. And everyone who competes for the prize is temperate in all things. Now they do it to obtain a perishable crown, but we for an imperishable crown. ~ 1 Corinthians 9:24-25

Do you not know that you are the temple of God and thatthe Spirit of God dwells in you? If anyone defiles the temple of God, God will destroy him. For the temple of God is holy, which temple you are. ~ 1 Corinthians 3:16-17

Tea and coffee are stimulating. Their effects are similar to those of tobacco; but they affect in a lesser degree. Those who use these slow poisons, like the tobacco user, think they cannot live without them, because they feel so very bad when they do not have these idols....Those who indulge a perverted appetite, do it to the injury of health and intellect. They cannot appreciate the value of spiritual things. Their sensibilities are blunted, and sin does not appear very sinful, and truth is not regarded of greater value than earthly treasure.

Tea and coffee drinking is a sin, an injurious indulgence, which, like other evils, injures the soul. These darling idols create an excitement, a morbid action of the nervous system; and after the immediate influence of the stimulants is gone, it lets down below par just to that degree that its stimulating properties elevated above par. ~ Counsels On Diet & Foods p. 425