Borrowing against Bitcoin

Everyone says bitcoin is a store of value, and the way to access that store is to borrow against it, debt isn’t taxable, so it’s a win-win all around.

But who is actually doing this (as the Borrower)? Who is the Lender in this scenario? Who lends against Bitcoin?

I’d love to hear a story or two of who is actually doing this sorta thing.

If you’re able to, please share the general terms: what’s the Loan to Value Ratio? Is Bitcoin the only collateral? How does the loan agreement deal with BTC’s volatility? What’s the interest rate? Is it fixed? What’s it pegged against, if it’s variable?

I don’t think I’ve seen a single post addressing this. I’ve seen a lot of Fiat bad; BTC is the Best posts.

Let’s see some actual real-world examples of someone pulling this maneuver.