Well, first of all, you need to distinguish between the degree of "social phobia". A medical social phobia is already a diagnosis like "claustrophobia", when a person cannot even enter an elevator and is considered a sick person
A household social phobia is a person who, in response to communication difficulties, prefers to bypass or even escape from communication difficulties and choose the difficulty of isolation. But there are two extreme cases here.
One, if isolation benefits the individual, and quite another, when isolation worsens the quality of life.
If the social phobia suffers from this choice, is malnourished, and is not treated , is sick, sad and dies early, then such a choice can be called "weak" both as a person and as an organism.
If such an isolationist begins to "flourish", grows materially, spiritually, becomes overgrown with students or followers, then such a person is strong both physically and as a person.
Strength in nature is a term of competition and survival.
Let's start with both concepts:
Social phobia appears for a reason. As a rule, some unpleasant events occur in our life (conflicts, failures, serious illnesses, accidents, non-recognition and misunderstanding by others, unrequited love, etc.), and in this regard, a person, with a wrong perception, typical states are formed , which are increasingly reproduced already in any life situations :
This definition expresses the essence of the issue , about which we were asked: social phobia is a strong personality ?
Answer : no, a social phobia, from the point of view of psychology, is a very weak personality, so how his situational stability of behavior suffers, that is, the same formed typical states are constantly reproduced, seemingly in ordinary and in no way dangerous situations of communication, being in a crowded place, etc.
Sociophobe can be a strong personality, in cases:
It seems to me that any person who has some kind of phobia is more vulnerable than a person who does not have a phobia. However, the concept of Strong personality is very vague.