Refreshed, did you read the whole article? This guy is against once saved always saved and so am I.
You said, "Now that being said, there are those who seem to fret over not fasting enough, or finding the time to bow before God in holiness which comes across as more of a lack of security to me. However I realize for some people it may be their way of repenting of sins that they think they see in their lives."
When we are saved we are motivated to do good works, but good works are not a way of repenting. Sometimes we do good works in obedience to God as He askes some of us to do some things. It doesn't mean we all have to do them nor does God ask us all of us to do them. It does not mean a lack of security. We are just trying to obey God and draw near to Him. Just because God wants me to fast, does not mean He wants you to fast, nor does it show that I am insecure. Some may fast because God may ask them to. Others may fast because they want to draw near to God. We should not condemn those who don't fast.