Some of these points are perceived situations in which social status affects its outcomes without proof but here they are. The main point is that if you have low status you will be treated differently which greatly changes your interactions with others.

1. You won't get treated fairly, someone with perceived high social status will get fairer treatment. This I personally witnessed in a hospital setting where the sole presence of someone "important" was notified in advance and they got more attention which means probably better attention to detail and therefore outcome in treatment. You might also receive worse service, such as in restaurants, flights, hotels. As people want to court and leave a better impression with someone in a social status

2. People will not respect you. As the article said status comes with respect. You might not judge others by their status but others will for sure judge you. They will talk behind their back about you and this will negatively affect any encounters with other people. Even if you don't judge others low social status will negatively discolor your interactions with others.

3. Also cause and effect might be inverted here. Low skill and ability in a specific domain usually leads to low status. Therefore other's treat you worse as your skills are of relative little importance in the domain. If someone in a tech setting can't solve trivial problems they will aquire low status and suffer in a multitude of ways. In the best case you will be ignored and assigned to tasks with relative little value. In the worst case you can't continue to work there. Just the fact that you have low social status should get you to worry. If you had better skill your social status would actually improve, at least to people that are in the same domain and value the particular skills needed there.

Either you suffer repercussions due to your low social status or you suffer repercussions due to the factors that lead to your status.