Hard to know exactly what's going on, but then I'm not that informed and don't understand finances.
Did FFP/PSR rules change or something? If not, I can see a few possible reasons why you could end up with more loans, some of them very similar. I don't know if any of these happened.
- Increased player wage demands as a proportion of total budget, meaning less money for transfers & making loans more common
- Revenue drops or stagnation
- Clubs willing to absolutely max out their PSR allowance, still wanting players when they're already close to the limit and the only way they can get it done is to loan? Mind you, would have thought loan fees vs 1 year's amortisation on a transfer would be similar numbers. I think a lot of the mandatory loan-to-buy ones are in this category though, shifting the problem to next season.
- More clubs than usual have made regrettable transfers than is normal in the past 1-3 seasons? Can't shift all the deadwood any other way