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. ......
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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.
Investment and business are not much different, both may succeed or fail, so it is impossible to call borrowing money to do business a good debt, and borrowing money to invest is bad debt. When you start a business, even if you have a good idea, a perfect plan… there is no guarantee that everything will go according to plan. If business were as easy as you think, many people would not accept being employees, and everyone would become entrepreneurs instead.
If you have a job with a good salary, I would advocate taking a loan to invest because even if that investment fails, you can easily pay back the loan. Saving money to invest is not bad, but opportunities will not wait for you, so if you have a good income and opportunities are in front of you, borrowing money to invest is not too scary.