Do you know that most traders and forum users here lies about their dealing in bitcoins. Some exaggerate to their family and friends the unrealistic profit they claim they are making online through bitcoins and these same liers don't tell their losses. Have you ever lied or bragg to your friends about bitcoins.
a) If the area of concern is within the family and friends, I don't see how it was a big deal if you see people bragging their bitcoin profit to them. Let them do what they want.
b) If it's about fraud attempt, you can really saw people showing their unrealistic profits because the purpose is to get the attention of the people. In that way they can used their convincing ability to put that person into scam.
c) In my own case, why should I? Majority of my friends and family knows Im into crypto and they already saw some of the
"things" I achieved because of this. No need to brag because in the first place, I don't see any reason why should I do that. If they are interested to know more, I will gladly guide them but honestly even they have an idea about the advantages of using crypto, still majority of them are not interested so I will leave it as that.