Illiteracy and ignorance make people say what ever they like about Crypto,it is normal for them to express the feelings about it but not to talk I'll about it because this is what has really made some many people live bouyantly.I wish they understood that Bitcoin is not related to crime in any way,it is a legit and legal way of making money through investment,either long term or short term.This question of whether Bitcoin is crime related was asked by someone I know sometimes ago,and it only takes time for you to explain in details what it's all about before they will believe you.But if they don't believe after explanation,then there is nothing to worry about because you owe no one explanation.
One will wonder what the activities in bitcoin are that gives them the money,but it is left for you to tell them the things one does that makes the money available which also gives them and edge over other financial sources.
I agree with you, the main factor is that bitcoin is legal under regulation in several countries and if the impact of bitcoin can be dark activities to launder money or opportunities to commit criminal acts then of course regulation of the use of bitcoin will not be legalized in developed countries, so that explanation should have been enough to explain to them that they have a negative opinion against the use of bitcoin, if they don't accept our explanation then there will be no problem and everyone generally knows the use of bitcoin is not for criminal acts under any circumstances.