Well, on one side, it is good that we do not tell everyone what we have invested in bitcoins and crypto, but actually, it is the intention of telling others and how others interpret it. Some people show off their investments that is not a good thing and if you do so, it can create probelms for you as there are jealous people around you who if they can't get themselves same investments, they may try to snatch yours. 

However telling people that you invest in bitcoin because you want that other get motivated and invest the same, is actually good. If you intent is that other will get the same benefits if they also accumulate bitcoins, then its no harm advising your family and friends to invest in bitcoins BTC