Considering privacy, is it better to send small amount of BTC to my hard wallet or there is no problem sending all my BTC at once?
I mean, if I send 5 BTC from 1000 diferent addresses to just one address in my Ladger Nano, it will be clear that all those adresses belongs now to just one person.
So, somebody could guess some of those addresses belongs to me, because let's say, I had some tip address in Youtube, therefore this bad guy could realize I consolidated my BTC on a Hardwallet, therefore he could want to kidnap me.
Am I right on this way of thinking?
Yes someone could trace that wallet back to you theoretically, although they may not know if its your wallet or you paid someone. This is why Bitcoin is not completely anonymous. It is anonymous until you make a transaction to a vendor or account that has your personal info attached to it. At some point, the governments will have compiled lists of wallets connected to people.