I don't buy that it was $$ decision. I believe that Tom was picking up a nice check, sure (and he earned every penny of that)
Had they replaced him with... idk... Raven Simone, or Normani, or... you get the picture, yeah, I'd understand. Tyra though? please. her ego is too large to go for a "moderate" pay.
idk if it happened before the current movement... but right now it kinda looks like filling the quota with underqualified candidates (to be fair though 99% of people white, black, Asian, whatever, would be underqualified next to Tom, so not REALLY a slight against Tyra. it'll be tough for her, for sure)