As an introvert and someone who avoids relationships where possible, I am aware that this is true. My point was that prolonged social isolation under pandemic circumstances has an impact of some sort on everyone - often a negative impact, but not exclusively so. We are affected by our environments and by our relationships. It would be strange to not notice any effect when those relationships and environments change. For example, introverted clients might be able to enjoy their own company but struggle not seeing their therapist in person. That circumstance doesn't apply to me, but I hear variations of this often expressed here.