I appreciate the heart behind your response about “true” repentance or believers and not using the wording. Scripture does this though, so we can as well. For instance, Paul spoke of false believers/brothers (Galatians 2:4). This is what’s being communicated when that wording is used. Someone who portrays themselves as a follower but is not truly one. You can even think you are true and not be (Matthew 7:22). This is not foreign to the Bible at all, and is communicated in many ways, even in the Old Testament (Isaiah 29:13). These are false believers with false repentance for one reason or another, and since they are false, we can say they are not “true believers” or do not have “true repentance”. This is no different than saying one has false/not true any number of things, such as humility (Col 2:18), false prophets and messiahs (Mark 13:22), false witnesses vs true (proverbs 12:17, etc.

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As someone who baptized his daughter while she was at a young child, I agree. The point being made was that baptism isn't for infants; I definitely could have been more clear. I think if you have an awareness of sin in your life and your heart is convicted to follow Christ, then you are a candidate for baptism. Infants obviously can't do that, and for the rest of us, that time of awareness will be different as we mature at different speeds. As for the rest, at WFR most of us make a point to discuss the Holy Spirit indwelling you to help you walk it out (the sanctification process), which is why I added that in at the time she brought it up. Too many people simply ignore the Spirit and His work in our lives post baptism, and that is really a shame.

Also, you are correct about no accounts of people baptizing themselves. However, while it certainly isn't an apples to apples comparison and shouldn't be used to teach that you can baptize yourself, Naaman in 2 Kings 5 is an example one could easily use to make the case for self-baptism in unique situations. His washing was in order to be cleansed, and he was told to go wash himself. Also, under Jewish law and tradition, there were other ceremonial washings/immersions that you did (or could do) on your own, one of which was to be converted (much like baptism is when we are converted). These, along with John's baptism, paved the way for Christian baptism. The passive voice of "be baptized" makes these cases less applicable to Christian baptism, but the model is certainly there to make the case.