Well, it does help that I have 1000's of referrals.
It looks unrealistic for me, or it has a long time frame before you've got that thousand referred users.
However it is and if that is true, well, congrats, and please share with us here how did you do this.
What is the best way to get a crypto related referral link seen?
AFAIK, the best way is to make your own review website and publish it anywhere to have good traffic that will result to get even thousands of referred users, but the problem is you need a community where you publish your website to lure users. Try to have a look at the gambling section, I saw many threads there promoting their own gambling review website that has referral links.
Having that much referrals sounds impossible these days because the number of faucet hunter is not as huge as what we can see in the past. If he has that much, I believe he did it since long time ago but the question is "are all those active referrals?".
It is useless to have hundred or thousands referrals if they are inactive. It applies in all kind of services where the commission will always depending on the activities of the referrals.
Coming up to where to promote referral link? There are many ways as mentioned by most other users here. Social media can be a good choice if we have many friends/followers. Other way can be on forum, there are some other forum outside bitcointalk where referral link is not something against the rule.