False prophets use deception to deceive. They are like wolves in sheep's clothing. They take on the appearance of being righteous so they can get in close.

2Co 11:13 For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
2Co 11:14 And no marvel; for Satan himself is transformed into an angel of light.
2Co 11:15 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.

1. Divert attention away from matters they don't want you to observe
2. Distract you from important topics
3. Make up sentences that don't answer your questions. For example, You ask "Who started the group?" and they answer "We don't keep track of genealogies." This is not an answer to the question asked. Your question was about the founder, not blood relationships.
4. Make up answers to questions different than what you asked
5. May tell you lies to try to influence you in a bad way
6. May tell you what you want to believe to deceive you
7. Do not always have your best interests in mind other than to use it to their advantage

Warnings in Scripture

Mat 24:4 And Jesus answered and said unto them, Take heed that no man deceive you.
Mat 24:5 For many shall come in my name, saying, I am Christ; and shall deceive many.

Mat 24:11 And many false prophets shall rise, and shall deceive many.
Mat 24:12 And because iniquity shall abound, the love of many shall wax cold.
Mat 24:13 But he that shall endure unto the end, the same shall be saved.

This is very much like the 2x2s which believe that they are "the truth" and deceive many to follow them instead of God.

Mat 24:24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
Mat 24:25 Behold, I have told you before.

One of the signs and wonders of the 2x2s is their "2x2 ministry", meetings in their home and conventions which they claim could not be done without God. What does that say about the others that go out in pairs like Jehovah's Witnesses and Mormons? They will be their judges.

Mar 13:5 And Jesus answering them began to say, Take heed lest any man deceive you:
Mar 13:6 For many shall come in my name, saying, I am Christ; and shall deceive many.

Rom 16:18 For they that are such serve not our Lord Jesus Christ, but their own belly; and by good words and fair speeches deceive the hearts of the simple.

1Co 3:18 Let no man deceive himself. If any man among you seemeth to be wise in this world, let him become a fool, that he may be wise.
1Co 3:19 For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.

Eph 4:14 That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive;

Eph 5:6 Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.

2Th 2:3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;

Questions

1. Is it healthy to divert people away from the question they are seeking to answer?
2. Is it good to lie and deceive when people ask questions of which you are afraid?