There are bad debts and there are good debts. Bad debts- loaning money to buy a car that won't be used for business ( Uber, Bolt). Loaning money to buy a pair of shoes, clothes, a piece of furniture etc. ......
......
Would you classify borrowing money to invest in Bitcoin as good debt or bad debt?
I think good debt is for business capital. For a business that we do, not for investment anywhere, including in bitcoin.
Investments are a different area, their returns are uncertain, and tend not to be much, unless you keep the investment for a long time. Meanwhile, you always have to pay the debt every month. Make sure that you get income every month from your debt. That's a good debt
If you have a job with a good salary, and you want to invest then debt is not a good way. You simply pool the money and invest it.