The crux of financial fair play is a break-even requirement from our operational activity alone over a 3 year period. It's actually quite hard to breach that unless you're willfully irresponsible.
Ultimately no one outside the club can say that this summer's transfer moves are definitively not risking our FFP position because the impact of the Rice, Havertz plus the incoming CL revenue won't be publicly visible for another year. So you could be right.
However, there's a pretty good track record of Arsenal showing good financial governance. Moreover, the impact of player transfers is offset by the lower interest payments, lower wage bills and recent CL qualification as the player transfer fees are spread over the life of their contracts while the other 3 are manifested immediately.
As ever It comes down to whether we spend money to buy good players - £65m for Havertz will be a bargain if he delivers but if we signed someone for £30m and he flops it's far more costly in the long run.