My partner is an introvert & I love him for him but my friends keep saying it’s a “con”

So my bf is an introvert and likes to be around me only. He feels safe and comfortable in our home. My friends lately have been pushing me to invite him out all the time. Meanwhile their partners don’t really come out much maybe like once in a blue moon.

They were trying to say there’s lots of cons bc he’s introverted. Due to past experiences for me and him with mixing partners with friends we kinda also just like it to be just us hanging out. I don’t see anything wrong with it. My friends have been so nosy trying to be in my business and it’s honestly annoying. It’s gonna make me become distant towards them because they are making this more about them at this point. They met him already twice. I don’t spend time with their partners so I’m not understanding why they want to spend time with him especially when I have said he’s introverted and has bad social anxiety. That doesn’t make him a bad person but apparently in their eyes it makes him a bad person.