Stuttgart made a very sweet start to the season and of the 4 matches they played they managed to win 3 times. One of their wins came when they beat Mainz away from home last week with a score of 1-3. I feel that currently Stuttgart are getting the results they want and they have enough points to stay at the bottom of the table later. I don't think Stuttgart will threaten the competition in the top 4 and they rather have the advantage of being ahead so far compared to other weak teams. If Stuttgart continue to be consistent until the middle of the season then it is clear they will not be too bothered by the relegation zone.
Yes indeed, at the beginning of this season that Stuttgart managed to get very good results so far. Because anyway, Stuttgart is not a team with above average quality but at this moment Stuttgart managed to be in the top four in the Bundesliga standings. Despite the fact, last season Stuttgart was almost relegated, and because Stuttgart managed to win in the relegation round against Hamburger, so Stuttgart can return to play in the Bundesliga this season. Amazingly, Stuttgart have had a significant change if we consider the results Stuttgart have had in this moment. Indeed, at least if Stuttgart can maintain this good performance, then surely Stuttgart will probably remain in the middle zone or maybe Stuttgart can survive in the top zone in this season, who knows.
The next match for Stuttgart will be against Darmstadt in Bundesliga and we know a team like Darmstadt can't make trouble for Stuttgart. Currently, in the past games we saw from both teams, Darmstadt is a team in 17th place in the table which can be the reason to say they didn't have a good performance so far and are not in the situation to beat a team like Stuttgart. On the other hand, as you said Stuttgart is currently in a good situation and they start the reason better than we were expecting to see from them.