My point is that before anyone writes in a public forum a conclusion that states that someone else has lied several times, if condition "X" is true, should be more careful, or verify the condition before writing such a statement, or perhaps choose to write the statement in a different way without the words liar, lying, etc.

Being labeled as a liar can be very damaging to future marketing of a commercial product, as well as being very offensive personally. I understand and agree with Trevor's angry response to the original statement by Andreas. That is all.