People considering buying a Tesla isn’t the same as people actually buying a Tesla.
13% of owners found the experience so bad they are completely unwilling to consider the brand. People who dislike the cars or company but want a sub 45k EV with ~300 miles of range still don’t have a lot of options. Thus most current owners would at least consider buying another Tesla.
Why do you think those 13% found the experience very bad? They might have moved to an area where there are no superchargers, they may want to try something different (which people do, even if they like what they have today), they might want a different body type (sport instead of the family), there may be many other reasons.
13% of owners found the experience so bad they are completely unwilling to consider the brand. People who dislike the cars or company but want a sub 45k EV with ~300 miles of range still don’t have a lot of options. Thus most current owners would at least consider buying another Tesla.