I'm not sure if we heard that right though, I do not think that will be a smart move for them to take out loans and then buy Bitcoin all along. Unless the interest is not that big but I highly doubt it.
They have a lot of Bitcoin already, sure they wanted more, but perhaps they will have to raise another set of funds from their investors and probably some secret entities out there that they are behind MSTR because they've seen what they have done and turn this company into a Billion dollar. So it's not that hard to get a lot of investors for them.
The current Mstr model is operating very efficiently: raising capital through long-term low-interest loans to accumulate BTC for the company, thereby generating profits from the price increase of BTC and gaining a reputation from the MSTR stock's success. Its only risk is the danger of default if the BTC price falls to 0 and the crypto market disappears, but I don't believe this will come true.
Saylor used to dislike BTC but change has come, better late than never. Mstr is holding a lot of BTC and has become the leading company in the wave of businesses actively accumulating BTC. Every company in the world wants to have this reputation, the price increase of MSTR is even greater than the price increase of NVDA, reaffirming the enormous benefits that the BTC strategy brings to Mstr.