Who understood or from the experience of past forks: if I borrow USD (not bitcoins) and buy bitcoins before fork will I receive b2x tokens?
I read this statement
https://www.bitfinex.com/posts/223 but it is clearly only about the borrowing of bitcoins.
If you borrow USD to buy Bitcoins then at the time of the fork you will own those Bitcoins and therefore get the B2X tokens.
From the statement you linked to:
Specifically, in the case of a hard fork event, lenders will receive both BTC and B2X. Anyone that is short BTC/USD or long any BTC trading pair (ETH/BTC, LTC/BTC, etc.) will owe B2X to the lender, effectively making the user short B2X. An exception is being made where BTC is borrowed but is not in use as financing collateral. In that case, B2X will accrue to the lender. Users that are financed long BTC/USD or short any BTC trading pair will receive B2X.
I bolded the bit that confirms that. If you buy BTC in a trade then you are long BTC in trading parlance
I understand perfectly well about being long in BTC and receiving B2X tokens (read you have bitcoins in your account), but I don't quite understand the part between the parts you made bold. In other words, the quote you posted could be read as "Users that are financed [...] short any BTC trading pair will receive B2X". Doesn't it contradict the parts which are bold in your post since you can be short or long BTC in "any BTC trading pair"? This makes no sense to me. If I read it literally, it basically means that both lenders and borrowers should be credited B2X coins which is nonsense, obviously. What am I missing here or is it just Bitfinex not being quite clear in their statement?