The results ultimately don't matter. If you introduce them to Bitcoin being honest about how it works and why it is good money, without making dishonest claims or guarantees of success, then you're not a scammer.

If the other person makes the choice to save some of their wealth in Bitcoin, that's their choice, and they bear responsibility for their success or failure. If their choice leads to success, it doesn't make you a Messiah, it makes you a person who shared their honest opinions on a different monetary technology, and the same is true if their choice leads to failure.

The responsibility always falls on the person buying Bitcoin to weigh up the cost/benefit of doing it.

The same is not true of shitcoins, because none of them are decentralised and all of them have a team of developers who have control. So, by recommending them, you are at worst a scammer (if you know that they are inferior money) or you're a fool (because you don't know they are inferior money, so you're recommending something without doing your due diligence).