Well your uncle is not your father or your mother, do not let someone like him change your mentality, and that doesn't mean you shouldn't talk about Bitcoin, you will be able to being in more people into Bitcoin and they will be able to talk good about you. I have brought in more than 8 people onto Bitcoin investment and I don't regret it, they are crypto traders, crypto miners, and crypto investors, a few of them are close friends and they are accepting Bitcoin as means of payment in their businesses.
The way I look at it, @OP had not given any good result yet on his Bitcoin venture, reason why his uncle advice him what he thinks is good for @OP. Sadly @OP took it as an insult and react with a disrespectful answer. I have the same experience when my parents told mo to look for another source of extra income when my venture on cryptocurrency did not have any result yet. I just listen to them and explain things to them in a respectful way. After a year or two, my effort is rewarded and I got a great result that made my parents change their minds and support my crypto venture.
Watch out for bad people, but teach those who are very close to you, it's very important, I thought someone how to make money from airdrops and they showed some compensation, this person bought me my birthday cake 🎂 and his family thanked me for showing their son a way to make money, seriously it feels so good.
I agree, we need to be careful in teaching people. Not all have a kind heart, others are jealous and greedy and will do bad things when they got a chance to take advantage of you.